@article{StulpeGudderHagler1988,
  author    = {Stulpe, Werner and Gudder, S. and Hagler, J.},
  title     = {An Uncertainty Relation for Joint Position-Momentum Measurements},
  series = {Foundations of Physics Letters. 1 (1988), H. 3},
  journal   = {Foundations of Physics Letters. 1 (1988), H. 3},
  isbn      = {1572-9524},
  pages     = {287 -- 292},
  year      = {1988},
  language  = {en}
}
@article{StaatBallmann1988,
  author    = {Staat, Manfred and Ballmann, J.},
  title     = {Wave Propagation and Focussing in Plates},
  series = {Impact loading and dynamic behaviour of materials : Papers presented at the International Conference on Impact Loading and Dynamic Behaviour of Materials, Vol. 2 / Chiem, C. Y.; Kunze, L. (u.a.) [eds]},
  journal   = {Impact loading and dynamic behaviour of materials : Papers presented at the International Conference on Impact Loading and Dynamic Behaviour of Materials, Vol. 2 / Chiem, C. Y.; Kunze, L. (u.a.) [eds]},
  publisher = {DGM Informationsges.},
  address   = {Oberursel},
  year      = {1988},
  language  = {en}
}
@phdthesis{Artmann1988,
  author    = {Artmann, Gerhard},
  title     = {Monolayer-Photometrie zur Quantifizierung der Form und induzierter Formver{\"a}nderungen menschlicher Erythrozyten},
  pages     = {143 S. : Ill., graph. Darst.},
  year      = {1988},
  language  = {de}
}
@article{LaackCasser1988,
  author    = {Laack, Walter van and Casser, H. R.},
  title     = {M{\"o}glichkeiten und Grenzen der Ultraschalldiagnostik bei Muskel- und Sehnenverletzungen im Sport / Casser, H. R. ; Laack, W. van},
  series = {Schmerz und Sport : interdisziplin{\"a}re Schmerztherapie in der Sportmedizin ; 42 Tabellen / R. Spintge ... (Hrsg.)},
  journal   = {Schmerz und Sport : interdisziplin{\"a}re Schmerztherapie in der Sportmedizin ; 42 Tabellen / R. Spintge ... (Hrsg.)},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {3-540-18682-4},
  pages     = {13 -- 25},
  year      = {1988},
  language  = {de}
}
@article{Stulpe1988,
  author    = {Stulpe, Werner},
  title     = {Conditional Expectations, Conditional Distributions, and A Posteriori Ensembles in Generalized Probability Theory},
  series = {International Journal of Theoretical Physics. 27 (1988), H. 5},
  journal   = {International Journal of Theoretical Physics. 27 (1988), H. 5},
  isbn      = {1572-9575},
  pages     = {587 -- 611},
  year      = {1988},
  language  = {en}
}
@article{ArtmannGrebeHomrighausenetal.1988,
  author    = {Artmann, Gerhard and Grebe, R. and Homrighausen, A. and Wolff, H. and Teitel, P. and Schmid-Sch{\"o}nbein, H.},
  title     = {Response of normal and diabetic erythrocytes to membrane deformation by chemical and mechanical forces. Artmann, Gerhard Michael; Grebe, R.; Homrighausen, A.; Wolff, H.; Teitel, P.; Schmid-Sch{\"o}nbein, H.},
  series = {12. Jahrestagung der Gesellschaft f{\"u}r Mikrozirkulation},
  journal   = {12. Jahrestagung der Gesellschaft f{\"u}r Mikrozirkulation},
  publisher = {Karger [u.a.]},
  address   = {Basel [u.a.]},
  pages     = {196 -- 200},
  year      = {1988},
  language  = {en}
}
@inproceedings{KalbeKuropkaMeyerStorketal.1988,
  author    = {Kalbe, Jochen and Kuropka, Rolf and Meyer-Stork, L. Sebastian and Lauter, S. L. and H{\"o}cker, Hartwig and Berndt, Heinz},
  title     = {Identification of fine animal hair via DNA analysis},
  series = {Proceedings of the 1st International Symposium on Specialty Animal Fibers : Aachen, October 26 - 27, 1987 ; [scientific, technological and economical aspects] . - (Schriftenreihe des Deutschen Wollforschungsinstitutes an der Technischen Hochschule Aachen e.V. ; 103)},
  booktitle = {Proceedings of the 1st International Symposium on Specialty Animal Fibers : Aachen, October 26 - 27, 1987 ; [scientific, technological and economical aspects] . - (Schriftenreihe des Deutschen Wollforschungsinstitutes an der Technischen Hochschule Aachen e.V. ; 103)},
  editor    = {K{\"o}rner, Andrea},
  publisher = {Dt. Wollforschungsinst.},
  address   = {Aachen},
  issn      = {0930-3723},
  pages     = {221 -- 227},
  year      = {1988},
  language  = {en}
}
@article{WangAnikFrohberg1988,
  author    = {Wang, Mao and Anik, Sabri and Frohberg, Martin G.},
  title     = {Experiments on the electrochemical determination of the sulphur activities in the system copper-silver at 1200°C},
  series = {Zeitschrift f{\"u}r Metallkunde},
  volume    = {79},
  journal   = {Zeitschrift f{\"u}r Metallkunde},
  number    = {5},
  issn      = {0044-3093},
  pages     = {336 -- 339},
  year      = {1988},
  language  = {en}
}
@article{KalbeKuropkaMeyerStorketal.1988,
  author    = {Kalbe, Jochen and Kuropka, Rolf and Meyer-Stork, L. Sebastian and Berndt, Heinz and [u.a.],},
  title     = {Isolation and characterization of high-molecular mass DNA from hair shafts},
  series = {Biological chemistry},
  volume    = {369},
  journal   = {Biological chemistry},
  number    = {1},
  isbn      = {0177-3593},
  doi       = {10.1515/bchm3.1988.369.1.413},
  pages     = {413 -- 416},
  year      = {1988},
  language  = {en}
}
@article{AnikFrohberg1988,
  author    = {Anik, Sabri and Frohberg, Martin G.},
  title     = {Thermodynamics of oxygen in the copper-antimony system at 1473K},
  series = {Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik},
  volume    = {41},
  journal   = {Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik},
  number    = {10},
  issn      = {0044-2658},
  pages     = {498 -- 501},
  year      = {1988},
  language  = {en}
}
@article{MeyerStorkKalbeKuropkaetal.1988,
  author    = {Meyer-Stork, L. Sebastian and Kalbe, Jochen and Kuropka, Rolf and Sauter, S. L. and H{\"o}cker, Hartwig and Berndt, Heinz},
  title     = {Eindeutige Provenienzanalyse von Wolle und feinen Tierhaaren mit Hilfe der Erbsubstanz (DNS)},
  series = {Textilveredlung : schweizerische Zeitschrift f{\"u}r Textilchemie, Textilveredlung und deren Randgebiete},
  volume    = {23},
  journal   = {Textilveredlung : schweizerische Zeitschrift f{\"u}r Textilchemie, Textilveredlung und deren Randgebiete},
  number    = {9},
  issn      = {0040-5310},
  pages     = {304 -- 307},
  year      = {1988},
  language  = {de}
}
@article{KrauseFruth1987,
  author    = {Krause, Gregor and Fruth, Bernhard},
  title     = {Dielectric Properties of Polyolefins Stressed by High Electrical Fields. Fruth, B. ; Krause, G.},
  year      = {1987},
  language  = {en}
}
@book{Siepmann1987,
  author    = {Siepmann, Thomas},
  title     = {Reibmomente in Zylinderrollenlagern f{\"u}r Planetenr{\"a}der},
  address   = {Bochum},
  isbn      = {3-89194-068-8},
  pages     = {279 S. : graph. Darst.},
  year      = {1987},
  language  = {de}
}
@book{Willms1987,
  author    = {Willms, Herbert},
  title     = {Untersuchung der Wechselwirkung zwischen Str{\"o}mungsfeld und Reaktionsfront beim deflagrativen Abbrand von Kohlenwasserstoff-Luft-Gemischwolken},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  isbn      = {3-18-142719-5},
  pages     = {VII, 168 S. : Ill., graph. Darst.},
  year      = {1987},
  language  = {de}
}
@book{Maether1987,
  author    = {Maether, Christiane},
  title     = {Zeichnung und Malerei / Text: Wolfgang Becker},
  address   = {Aachen},
  pages     = {71 S.: {\"u}berw. Ill.},
  year      = {1987},
  language  = {de}
}
@book{Hegewald1987,
  author    = {Hegewald, Ulf},
  title     = {Ulf Hegewald / hrsg. von Marianne Hennemann},
  publisher = {Galerie Hennemann},
  address   = {Bonn},
  isbn      = {3-88482-032-X},
  pages     = {88 S. : {\"u}berw. Ill.},
  year      = {1987},
  language  = {de}
}
@book{Grap1987,
  author    = {Grap, Rolf Dietmar},
  title     = {Bestimmung der wirtschaftlichen Anzahl von Handhabungssystemen f{\"u}r die Pralinenverpackung f{\"u}r die Firma Chocoladenfabriken Lindt \& Spr{\"u}ngli GmbH: Projektergebnisbericht},
  publisher = {IAW - Lehrstuhl und Institut f{\"u}r Arbeitswissenschaft der RWTH Aachen},
  address   = {Aachen},
  year      = {1987},
  language  = {de}
}
@book{Grap1987,
  author    = {Grap, Rolf Dietmar},
  title     = {Konzeption eines EDV-Systems f{\"u}r die Auftragsabwicklung im Bereich der Weiterverarbeitung der Thyssen-Henrichsh{\"u}tte nach software-ergonomischen Kriterien},
  publisher = {IAW - Lehrstuhl und Institut f{\"u}r Arbeitswissenschaft der RWTH},
  address   = {Aachen},
  year      = {1987},
  language  = {de}
}
@article{Frings1987,
  author    = {Frings, Michael},
  title     = {Rechtswirkungen eines Auslandskonkurses f{\"u}r Inlandsforderungen, LG Aachen},
  series = {Neue juristische Wochenschrift : NJW / NJW-Rechtsprechungs-Report Zivilrecht : NJW-RR (1987)},
  journal   = {Neue juristische Wochenschrift : NJW / NJW-Rechtsprechungs-Report Zivilrecht : NJW-RR (1987)},
  isbn      = {0179-4043},
  pages     = {502},
  year      = {1987},
  language  = {de}
}
@article{Frings1987,
  author    = {Frings, Michael},
  title     = {Vertragsstrafenklausel in Automatenaufstellvertr{\"a}gen, LG Aachen},
  series = {Neue juristische Wochenschrift : NJW / NJW-Rechtsprechungs-Report Zivilrecht : NJW-RR (1987)},
  journal   = {Neue juristische Wochenschrift : NJW / NJW-Rechtsprechungs-Report Zivilrecht : NJW-RR (1987)},
  isbn      = {0179-4043},
  pages     = {948},
  year      = {1987},
  language  = {de}
}
@article{PietschKurbelLabentz1987,
  author    = {Pietsch, Wolfram and Kurbel, K. and Labentz, M.},
  title     = {Prototyping und Projektmanagement bei großen Entwicklungsteams / Kurbel, K., Labentz, M., Pietsch, W.},
  series = {Information management : IM ; Praxis, Ausbildung u. Forschung d. Wirtschaftsinformatik. 2 (1987), H. 1},
  journal   = {Information management : IM ; Praxis, Ausbildung u. Forschung d. Wirtschaftsinformatik. 2 (1987), H. 1},
  isbn      = {0930-5181},
  pages     = {6 -- 15},
  year      = {1987},
  language  = {en}
}
@article{StarkeBeckmannRogosetal.1987,
  author    = {Starke, G{\"u}nther and Beckmann, L.-H. and Rogos, J. and Schmall, K-H. (u.a.)},
  title     = {Sensoren in der automatisierten Schweisstechnik},
  pages     = {61 -- 147},
  year      = {1987},
  language  = {de}
}
@article{Starke1987,
  author    = {Starke, G{\"u}nther},
  title     = {Nahtfuehrungssensor zur adaptiven Steuerung von Handhabungseinrichtungen fuer das Lichtbogenschweissen},
  series = {Schweissen und Schneiden. 39 (1987), H. 4},
  journal   = {Schweissen und Schneiden. 39 (1987), H. 4},
  isbn      = {0036-7184},
  pages     = {191 -- 192},
  year      = {1987},
  language  = {de}
}
@article{BlomePriester1987,
  author    = {Blome, Hans-Joachim and Priester, W.},
  title     = {Zum Problem des Urknalls: "Big Bang" oder "Big Bounce"? Teil 2},
  series = {Sterne und Weltraum. 26 (1987), H. 3},
  journal   = {Sterne und Weltraum. 26 (1987), H. 3},
  isbn      = {0039-1263},
  pages     = {140 -- 144},
  year      = {1987},
  language  = {de}
}
@article{BlomeKundt1987,
  author    = {Blome, Hans-Joachim and Kundt, W.},
  title     = {Hypersonic Jets from Young Stars in Molecular Clouds},
  series = {Circumstellar matter : proceedings of the 122nd symposium of the Internat. Astronom. Union held in Heidelberg, FRG, June 23 - 27, 1986 / ed. by I. Appenzeller ...},
  journal   = {Circumstellar matter : proceedings of the 122nd symposium of the Internat. Astronom. Union held in Heidelberg, FRG, June 23 - 27, 1986 / ed. by I. Appenzeller ...},
  publisher = {Reidel},
  address   = {Dordrecht u.a.},
  isbn      = {90-277-2511-X},
  pages     = {73 -- 74},
  year      = {1987},
  language  = {en}
}
@article{BlomePriester1987,
  author    = {Blome, Hans-Joachim and Priester, Wolfgang},
  title     = {The problem of the primeval explosion: 'Big bang' or 'big bounce'? I},
  series = {Sterne und Weltraum. 26 (1987)},
  journal   = {Sterne und Weltraum. 26 (1987)},
  isbn      = {0039-1263},
  pages     = {83 -- 89},
  year      = {1987},
  language  = {en}
}
@article{BlomePriester1987,
  author    = {Blome, Hans-Joachim and Priester, W.},
  title     = {Zum Problem des Urknalls},
  series = {Sterne und Weltraum. 26 (1987), H. 2},
  journal   = {Sterne und Weltraum. 26 (1987), H. 2},
  isbn      = {0039-1263},
  pages     = {83 -- 89},
  year      = {1987},
  language  = {de}
}
@book{RickRautenberg1987,
  author    = {Rick, Heino and Rautenberg, Hans G{\"u}nter},
  title     = {Die Pr{\"u}fung zum vereidigten Buchpr{\"u}fer in 1000 [tausend] Fragen und Antworten / hrsg. von Gustav Wrenger . Bd. 2 : Betriebswirtschaftslehre / von Hans G{\"u}nter Rautenberg ; Heino Rick},
  publisher = {Deubner},
  address   = {K{\"o}ln},
  isbn      = {3-88606-115-9},
  pages     = {VII, 145 S.},
  year      = {1987},
  language  = {de}
}
@book{KetternGruenebaumFrechen1987,
  author    = {Kettern, J{\"u}rgen and Gr{\"u}nebaum, Thomas and Frechen, Franz-Bernd},
  title     = {Standzeituntersuchungen an Kompostfiltern und Ausarbeitung von Bau- und Betriebsanleitungen f{\"u}r Erd- und Kompostfilter im Bereich von Kl{\"a}ranlagen : Abschlußbericht {\"u}ber erg{\"a}nzende Untersuchungen / Thomas Gr{\"u}nebaum; J{\"u}rgen T. Kettern; Franz-Bernd Frechen.},
  address   = {Aachen},
  pages     = {ca 180 S.},
  year      = {1987},
  language  = {de}
}
@book{Kettern1987,
  author    = {Kettern, J{\"u}rgen},
  title     = {Untersuchungen {\"u}ber die Einsatzm{\"o}glichkeiten und -grenzen mehrstufiger, insbesondere biologischer Behandlungsverfahren f{\"u}r Sickerwasser aus Hausm{\"u}ll-, Misch- und Sonderm{\"u}lldeponien mit Bilanzierung anorganischer und organischer Einzelsubstanzen : Abschluß},
  address   = {Aachen},
  pages     = {IV, 115 S.},
  year      = {1987},
  language  = {de}
}
@article{HoettgesRitterbachEls1987,
  author    = {H{\"o}ttges, J{\"o}rg and Ritterbach, E. and Els, H.},
  title     = {Optical Improvement of LDV-Measurement in Pipe Flow / Ritterbach, E.; J. H{\"o}ttges; H. Els},
  series = {Laser anemometry : advances and applications; proceedings of the 2. International Conference, Strathclyde, Scotland, 21st to 23rd September 1987 / ed. by John Turner ... UK LDA Users Group},
  journal   = {Laser anemometry : advances and applications; proceedings of the 2. International Conference, Strathclyde, Scotland, 21st to 23rd September 1987 / ed. by John Turner ... UK LDA Users Group},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3540187561},
  pages     = {VII, 601 S : Ill., graph. Darst.},
  year      = {1987},
  language  = {en}
}
@article{ArtmannTeitelSchmidSchoenbein1987,
  author    = {Artmann, Gerhard and Teitel, P. and Schmid-Sch{\"o}nbein, H.},
  title     = {Variable rheologische Antwort der Erythrozyten auf den Einfluß von Xantinderivaten (Coffein): Experimentelle Differenzierung von "Responders" und "Nonresponders"},
  series = {11. Jahrestagung der Gesellschaft f{\"u}r Mikrozirkulation},
  journal   = {11. Jahrestagung der Gesellschaft f{\"u}r Mikrozirkulation},
  publisher = {Karger [u.a.]},
  address   = {Basel [u.a.]},
  pages     = {100 -- 105},
  year      = {1987},
  language  = {de}
}
@article{ArtmannSchmidSchoenbein1987,
  author    = {Artmann, Gerhard and Schmid-Sch{\"o}nbein, H.},
  title     = {The microscope-photometrical-monolayer-technique- a new principle for analyzing the distribution of rheological responses in pathological and experimentally modified red cell populations. Artmann, Gerhard Michael; Schmid-Sch{\"o}nbein, H.},
  series = {Microcirculation, an update : proceedings of the Fourth World Congress for Microcirculation, Tokyo, Japan, July 26-30, 1987},
  journal   = {Microcirculation, an update : proceedings of the Fourth World Congress for Microcirculation, Tokyo, Japan, July 26-30, 1987},
  publisher = {Excerpta Medica},
  address   = {Amsterdam [u.a.]},
  isbn      = {0444809511},
  pages     = {475 -- 477},
  year      = {1987},
  language  = {en}
}
@article{HagemannOBryan1987,
  author    = {Hagemann, Hans-J{\"u}rgen and O´Bryan, H. M.},
  title     = {Grain boundary and surface segragation of Ba-Ti-O-Phases in rutile. O´Bryan, H. M.; Hagemann, H. J.},
  series = {Journal of the American Ceramic Society. 70 (1987)},
  journal   = {Journal of the American Ceramic Society. 70 (1987)},
  isbn      = {0002-7820},
  pages     = {274 -- 278},
  year      = {1987},
  language  = {en}
}
@book{Bullerschen1987,
  author    = {Bullerschen, Klaus-Gerd},
  title     = {Theoretische Untersuchungen zur thermischen Belastung der Elektroden des Lichtbogenofens und deren K{\"u}hlung durch Heat Pipes},
  publisher = {Techn. Hochsch., Fak. f{\"u}r Bergbau, H{\"u}ttenwesen u. Geowiss.},
  address   = {Aachen},
  pages     = {121 S. : graph. Darst., 21 cm},
  year      = {1987},
  language  = {de}
}
@article{Sponagel1987,
  author    = {Sponagel, Stefan},
  title     = {Analytische Berechnung von Gummi- Metall- Verbindungen},
  series = {Konstruktion : Zeitschrift f{\"u}r Produktentwicklung. 39 (1987), H. 4},
  journal   = {Konstruktion : Zeitschrift f{\"u}r Produktentwicklung. 39 (1987), H. 4},
  isbn      = {0373-3300},
  pages     = {151 -- 158},
  year      = {1987},
  language  = {de}
}
@article{SchaeferHagelskampMende1987,
  author    = {Sch{\"a}fer, Horst and Hagelskamp, B and Mende, H. H.},
  title     = {Streufeldkopplung zwischen geschichteten Transformator-M-Schnitten aus kornorientiertem und nicht-orientiertem SiFe-Material},
  year      = {1987},
  language  = {de}
}
@article{SchaeferMende1987,
  author    = {Sch{\"a}fer, Horst and Mende, H. H.},
  title     = {Stray field profile of grain-oriented rectangular 3\% SiFe sheets in dependence on vertical and in-plane magnetic fields},
  series = {Physica Status Solidi (A). 100 (1987), H. 2},
  journal   = {Physica Status Solidi (A). 100 (1987), H. 2},
  isbn      = {0031-8965},
  pages     = {621 -- 632},
  year      = {1987},
  language  = {en}
}
@article{Biener1987,
  author    = {Biener, Ernst},
  title     = {{\"U}berblick {\"u}ber Reinigungsverfahren von kontaminierten B{\"o}den},
  series = {[Tagungsband] 21. Tiefbaukolloquium / Haus der Technik e.V.},
  journal   = {[Tagungsband] 21. Tiefbaukolloquium / Haus der Technik e.V.},
  publisher = {Eigenverl. Haus der Technik},
  address   = {Essen},
  pages     = {5.01 -- 5.13},
  year      = {1987},
  language  = {de}
}
@article{Biener1987,
  author    = {Biener, Ernst},
  title     = {Planung neuer Deponien},
  series = {[Tagungsband] 21. Tiefbaukolloquium / Haus der Technik e.V.},
  journal   = {[Tagungsband] 21. Tiefbaukolloquium / Haus der Technik e.V.},
  publisher = {Eigenverl. Haus der Technik},
  address   = {Essen},
  pages     = {9.01 -- 9.08},
  year      = {1987},
  language  = {de}
}
@book{Polumsky1987,
  author    = {Polumsky, Dieter},
  title     = {Erweiterungsm{\"o}glichkeiten des Verkehrsplanungsalgorithmus},
  publisher = {Inst. f{\"u}r Stadtbauwesen, RWTH},
  address   = {Aachen},
  isbn      = {3-88354-114-1},
  pages     = {X, 200 S. : graph. Darst., Kt.},
  year      = {1987},
  language  = {de}
}
@book{Sponagel1987,
  author    = {Sponagel, Stefan},
  title     = {Gummi-Metall-Bauteile},
  address   = {Kaiserslautern},
  pages     = {126 S. : Ill., graph. Darst.},
  year      = {1987},
  language  = {de}
}
@article{SchwarzerBieger1987,
  author    = {Schwarzer, Klemens and Bieger, W.},
  title     = {Entwicklung eines solaren Kochers},
  series = {Erneuerbare Energiequellen : Aktivit{\"a}ten deutscher Hochschulen / zsgest. von F. A. Peuser ...},
  journal   = {Erneuerbare Energiequellen : Aktivit{\"a}ten deutscher Hochschulen / zsgest. von F. A. Peuser ...},
  publisher = {Zentralstelle f{\"u}r Solartechnik},
  address   = {Hilden},
  pages     = {2 -- 3},
  year      = {1987},
  language  = {de}
}
@article{SchwarzerBieger1987,
  author    = {Schwarzer, Klemens and Bieger, W.},
  title     = {Tests von solaren Brauchwassersystemen / W. Bieger ; K. Schwarzer},
  series = {Erneuerbare Energiequellen : Aktivit{\"a}ten deutscher Hochschulen / zsgest. von F. A. Peuser ...},
  journal   = {Erneuerbare Energiequellen : Aktivit{\"a}ten deutscher Hochschulen / zsgest. von F. A. Peuser ...},
  publisher = {Zentralstelle f{\"u}r Solartechnik},
  address   = {Hilden},
  pages     = {6 -- 7},
  year      = {1987},
  language  = {de}
}
@article{SchwarzerBieger1987,
  author    = {Schwarzer, Klemens and Bieger, W.},
  title     = {Entwicklung von solaren Unterrichtsmesspl{\"a}tzen fuer Indonesien / W. Bieger ; K. Schwarzer},
  series = {Erneuerbare Energiequellen : Aktivit{\"a}ten deutscher Hochschulen / zsgest. von F. A. Peuser ...},
  journal   = {Erneuerbare Energiequellen : Aktivit{\"a}ten deutscher Hochschulen / zsgest. von F. A. Peuser ...},
  publisher = {Zentralstelle f{\"u}r Solartechnik},
  address   = {Hilden},
  pages     = {4 -- 5},
  year      = {1987},
  language  = {de}
}
@article{SponagelKilthauSpies1987,
  author    = {Sponagel, Stefan and Kilthau, G. and Spies, K. H.},
  title     = {Sealing mechanism of lip seals},
  series = {Eleventh 11th International Conference on Fluid Sealing : proceedings of the 11th Internat. Conference on Fluid Sealing, held at Cannes, France 8 - 10 April, 1987 / organised and sponsored by BHRA, the Fluid Engineering Centre. Ed. B. S. Nau},
  journal   = {Eleventh 11th International Conference on Fluid Sealing : proceedings of the 11th Internat. Conference on Fluid Sealing, held at Cannes, France 8 - 10 April, 1987 / organised and sponsored by BHRA, the Fluid Engineering Centre. Ed. B. S. Nau},
  publisher = {Elsevier},
  address   = {London},
  isbn      = {3-540-51383-3},
  pages     = {748 -- 772},
  year      = {1987},
  language  = {en}
}
@article{KaemperSchmittGuentherodt1987,
  author    = {K{\"a}mper, Klaus-Peter and Schmitt, W. and G{\"u}ntherodt, G.},
  title     = {The influence of adsorbates on the spin-resolved photoemission of Ni(110). Schmitt, W.; K{\"a}mper, K.-P.; G{\"u}ntherodt, G.},
  series = {Surface Science. 189/190 (1987)},
  journal   = {Surface Science. 189/190 (1987)},
  isbn      = {0039-6028},
  pages     = {741 -- 507},
  year      = {1987},
  language  = {en}
}
@book{Grueters1987,
  author    = {Gr{\"u}ters, Hugo},
  title     = {Mechanik: Vorlesung},
  publisher = {Becker-Kuns},
  address   = {Aachen},
  pages     = {253 S.: zahlr. graph. Darst.},
  year      = {1987},
  language  = {de}
}
@article{KotterRiekert1987,
  author    = {Kotter, Michael and Riekert, L.},
  title     = {Tr{\"a}nkkontakte zur partiellen Oxidation von Buten zu Maleins{\"a}ureanhydrid},
  series = {Chemie - Ingenieur - Technik. 59 (1987), H. 9},
  journal   = {Chemie - Ingenieur - Technik. 59 (1987), H. 9},
  isbn      = {0009-286X},
  pages     = {733 -- 734},
  year      = {1987},
  language  = {de}
}
@article{Sparla1987,
  author    = {Sparla, Peter},
  title     = {Der Laserimpuls-Distanzmesser Distomat Wild DI3000 - Messprinzip und Genauigkeitsuntersuchung},
  series = {Allgemeine Vermessungs-Nachrichten : AVN ; Zeitschrift f{\"u}r alle Bereiche des Vermessungswesens. 94 (1987), H. 4},
  journal   = {Allgemeine Vermessungs-Nachrichten : AVN ; Zeitschrift f{\"u}r alle Bereiche des Vermessungswesens. 94 (1987), H. 4},
  isbn      = {0002-5968},
  pages     = {133 -- 146},
  year      = {1987},
  language  = {de}
}