@book{BaueerGilchRathetal.1990,
  author    = {Ba{\"u}er, Herbert and Gilch, Heinz Gerhard and Rath, Walter and Sch{\"u}mann, Uwe},
  title     = {Moisture-curing polyurethane-based hot-melt compositions = Feuchth{\"a}rtbare Heisschmelz-Zusammensetzungen auf Polyurethanbasis},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen},
  year      = {1990},
  language  = {en}
}
@article{PawelkeSchmittMeissen1990,
  author    = {Pawelke, Siegfried and Schmitt, W. and Meissen, Th.},
  title     = {Aachen 3D finger. 3D digitizer for application in dentistry / Schmitt, W. ; Pawelke, S. ; Meissen, Th.},
  series = {Biomedizinische Technik. 35 (1990), H. 4},
  journal   = {Biomedizinische Technik. 35 (1990), H. 4},
  isbn      = {0013-5585},
  pages     = {69 -- 71},
  year      = {1990},
  language  = {en}
}
@book{FassbenderVogler1990,
  author    = {Faßbender, Heinz and Vogler, Heiko},
  title     = {A call-by-need implementation of syntax directed functional programming},
  publisher = {RWTH, Fachgruppe Informatik},
  address   = {Aachen},
  pages     = {44 S. : graph. Darst.},
  year      = {1990},
  language  = {en}
}
@article{Grotendorst1990,
  author    = {Grotendorst, Johannes},
  title     = {Approximating functions by means of symbolic computation and a general extrapolation method},
  series = {Computer Physics Communications. 59 (1990), H. 2},
  journal   = {Computer Physics Communications. 59 (1990), H. 2},
  isbn      = {0010-4655},
  pages     = {289 -- 301},
  year      = {1990},
  language  = {en}
}
@article{ZiemonsHerzogFeinendegen1990,
  author    = {Ziemons, Karl and Herzog, H. and Feinendegen, L. E.},
  title     = {Iterative image reconstruction with weighted pixel contribution to projection element},
  series = {European Journal of Nuclear Medicine},
  volume    = {16},
  journal   = {European Journal of Nuclear Medicine},
  number    = {7},
  isbn      = {1619-7089},
  pages     = {403 -- 403},
  year      = {1990},
  language  = {en}
}
@book{BansalKleemannMeliss1990,
  author    = {Bansal, Narenda K. and Kleemann, Manfred and Meliß, Michael},
  title     = {Renewable energy sources and conversion technology},
  publisher = {Tata McGraw-Hill},
  address   = {New Delhi [u.a.]},
  isbn      = {0-07-460023-0},
  pages     = {XI, 454 S. Ill., graph. Darst.},
  year      = {1990},
  language  = {en}
}
@inproceedings{BerndtKalbeKuropkaetal.1990,
  author    = {Berndt, Heinz and Kalbe, Jochen and Kuropka, Rolf and Meyer-Stork, L. Sebastian and H{\"o}cker, Hartwig},
  title     = {Progress and limitations of the DNA analysis in fine animal fiber identification},
  series = {Proceedings of the 2nd International Symposium on Specialty Animal Fibers : Aachen, October 19 - 20, 1989. - (Schriftenreihe des Deutschen Wollforschungsinstituts an der Technischen Hochschule Aachen e. V. ; 106)},
  booktitle = {Proceedings of the 2nd International Symposium on Specialty Animal Fibers : Aachen, October 19 - 20, 1989. - (Schriftenreihe des Deutschen Wollforschungsinstituts an der Technischen Hochschule Aachen e. V. ; 106)},
  editor    = {K{\"o}rner, Andrea},
  publisher = {Dt. Wollforschungsinst.},
  address   = {Aachen},
  pages     = {259 -- 265},
  year      = {1990},
  language  = {en}
}
@article{KernWiesingerZischank1991,
  author    = {Kern, Alexander and Wiesinger, J. and Zischank, Wolfgang J.},
  title     = {Calculation of the longitudinal voltage along metal tubes caused by lightning currents and protection measures},
  series = {Seventh International Symposium on High Voltage Engineering : Dresden, August 26 - 30 1991},
  journal   = {Seventh International Symposium on High Voltage Engineering : Dresden, August 26 - 30 1991},
  publisher = {Techn. Univ.},
  address   = {Dresden},
  year      = {1991},
  language  = {en}
}
@article{Kern1991,
  author    = {Kern, Alexander},
  title     = {Simulation and measurement of melting effects on metal sheets caused by direct lightning strikes},
  series = {1991 International Aerospace and Ground Conference on Lightning and Static Electricity : proceedings of a conference ... held at Cocoa Beach, Florida, April 16-19, 1991 / NASA},
  journal   = {1991 International Aerospace and Ground Conference on Lightning and Static Electricity : proceedings of a conference ... held at Cocoa Beach, Florida, April 16-19, 1991 / NASA},
  address   = {Washington, DC},
  year      = {1991},
  language  = {en}
}
@article{Krause1991,
  author    = {Krause, Gregor},
  title     = {High Field Phenomena of Polymeric Insulation Investigated at PE Needle-Plane Specimen},
  series = {Seventh International Symposium on High Voltage Engineering : Dresden, August 26 - 30, 1991 / Technische Universit{\"a}t Dresden},
  journal   = {Seventh International Symposium on High Voltage Engineering : Dresden, August 26 - 30, 1991 / Technische Universit{\"a}t Dresden},
  publisher = {TU Dresden},
  address   = {Dresden},
  year      = {1991},
  language  = {en}
}
@article{JacobsQuernheimAghadavoodiJolfaei1991,
  author    = {Jacobs, Stephan and Quernheim, Ulrich and Aghadavoodi Jolfaei, Masoud},
  title     = {Performance Evalutation of three Access Protocols for VSAT Networks / Ulrich Quernheim, Stephan Jacobs, Masoud Aghadavoodi Jolfaei},
  series = {Proceedings of the second European Conference on Satellite Communications : ECSC-2 ; Palais de Congr{\`e}s, Li{\`e}ge, Belgium, 22 - 24 October 1991 / [ed.: Brigitte Kaldeich]},
  journal   = {Proceedings of the second European Conference on Satellite Communications : ECSC-2 ; Palais de Congr{\`e}s, Li{\`e}ge, Belgium, 22 - 24 October 1991 / [ed.: Brigitte Kaldeich]},
  publisher = {ESA Publ. Div.},
  address   = {Noordwijk},
  isbn      = {92-9092-170-6},
  pages     = {XXXII, 533 S. : Ill., graph. Darst.},
  year      = {1991},
  language  = {en}
}
@article{BlomePriester1991,
  author    = {Blome, Hans-Joachim and Priester, W.},
  title     = {Big Bounce in the very early Universe},
  series = {Astronomy and Astrophysics. 250 (1991), H. 1},
  journal   = {Astronomy and Astrophysics. 250 (1991), H. 1},
  isbn      = {0004-6361},
  pages     = {43 -- 49},
  year      = {1991},
  language  = {en}
}
@article{Esch1991,
  author    = {Esch, Thomas},
  title     = {Optimized design of the lubrication system of modern combustion engines. Verbesserte Ausf{\"u}hrung von Schmierungssystemen bei modernen Verbrennungsmotoren},
  isbn      = {0148-7191},
  doi       = {10.4271/912407},
  pages     = {1 -- 11},
  year      = {1991},
  language  = {en}
}
@article{BullerschenWilhelmi1991,
  author    = {Bullerschen, Klaus-Gerd and Wilhelmi, Herbert},
  title     = {Cooling of arc furnace electrodes with heat pipes},
  series = {Chemical Engineering \& Technology. 14 (1991), H. 1},
  journal   = {Chemical Engineering \& Technology. 14 (1991), H. 1},
  isbn      = {0930-7516},
  pages     = {45 -- 53},
  year      = {1991},
  language  = {en}
}
@article{Weigand1991,
  author    = {Weigand, Christoph},
  title     = {A Solution to the Scheduling Problem Taking into Account Quality},
  series = {Operations research '91 : extended abstracts of the 16th Symposium on Operations Research held at the University of Trier at September 9 - 11, 1991 / [GM{\"O}OR]. Peter Gritzmann ... (eds.)},
  journal   = {Operations research '91 : extended abstracts of the 16th Symposium on Operations Research held at the University of Trier at September 9 - 11, 1991 / [GM{\"O}OR]. Peter Gritzmann ... (eds.)},
  publisher = {Physica-Verl.},
  address   = {Heidelberg},
  isbn      = {3790806080},
  pages     = {373 -- 375},
  year      = {1991},
  language  = {en}
}
@article{HagemannLadeWarnieretal.1991,
  author    = {Hagemann, Hans-J{\"u}rgen and Lade, H. and Warnier, J. and Wiechert, D. U.},
  title     = {The performance of Depressed-Cladding Single-Mode Fibres with Different b/a Ratios. Hagemann, H.-J.; Lade, H.; Warnier, J.; Wiechert, D. U.},
  series = {Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 9 (1991), H. 6},
  journal   = {Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 9 (1991), H. 6},
  isbn      = {0733-8724},
  pages     = {689 -- 694},
  year      = {1991},
  language  = {en}
}
@article{Mackenstein1991,
  author    = {Mackenstein, Hans},
  title     = {The role of Germany, Japan and the United States on the ECU-bond markets / Hans Wilhelm Mackenstein},
  series = {De pecunia. 3 (1991), H. 1},
  journal   = {De pecunia. 3 (1991), H. 1},
  isbn      = {1015-6283},
  pages     = {113 -- 150},
  year      = {1991},
  language  = {en}
}
@article{HelsperMoelter1991,
  author    = {Helsper, Christoph and M{\"o}lter, W.},
  title     = {Characteristics of a Nebulizer with Cyclone Preseparator / M{\"o}lter, W. ; Helsper, C.},
  series = {Aerosols, their generation, behaviour and applications. Annual Conference of the Aerosol Society / Aerosol Society (UK) ; 5.},
  journal   = {Aerosols, their generation, behaviour and applications. Annual Conference of the Aerosol Society / Aerosol Society (UK) ; 5.},
  address   = {Loughborough},
  pages     = {89 -- 94},
  year      = {1991},
  language  = {en}
}
@article{HillenEckenbachQuadfliegetal.1991,
  author    = {Hillen, Walter and Eckenbach, W. and Quadflieg, Peter and Zaengel, Thomas T.},
  title     = {Signal-to-noise performance of a CsI fluorescent screen},
  series = {Medical Imaging V: Image physics},
  journal   = {Medical Imaging V: Image physics},
  isbn      = {0-8194-0538-8},
  pages     = {120 -- 131},
  year      = {1991},
  language  = {en}
}
@article{FoersterBruggerMeiners1991,
  author    = {F{\"o}rster, Arnold and Brugger, H. and Meiners, U.},
  title     = {High quality GaAs-based resonant tunneling diodes for high frequency device applications / H. Brugger ; U. Meiners ; C. W{\"o}lk ... A. F{\"o}rster ...},
  series = {Proceedings : August 5 - 7, 1991, Cornell University, Ithaca, New York / R. J. Trew, General Chairman},
  journal   = {Proceedings : August 5 - 7, 1991, Cornell University, Ithaca, New York / R. J. Trew, General Chairman},
  publisher = {Inst. of Electrical and Electronics Engineers},
  address   = {Piscataway, NJ},
  isbn      = {0-7803-0491-8},
  pages     = {39 -- ff.},
  year      = {1991},
  language  = {en}
}