@book{SponagelWachowitz1993,
  author    = {Sponagel, Stefan and Wachowitz, Waldemar},
  title     = {Wellendichtung : Europ{\"a}ische Patentschrift DE3621242C1 ; Ver{\"o}ffentlichungstag der Patentschrift : 06.06.1993 / Anmelder: Fa. Carl Freudenberg},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {[M{\"u}nchen u.a.]},
  pages     = {5 S. : Ill.},
  year      = {1993},
  language  = {de}
}
@book{KotterLintzTurek1993,
  author    = {Kotter, Michael and Lintz, Hans-G{\"u}nther and Turek, Thomas},
  title     = {Auslegung eines periodisch alternierend betriebenen SCR-Reaktors},
  publisher = {Kernforschungszentrum},
  address   = {Karlsruhe},
  pages     = {37 S. : graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{LauthMuellerHoelderich1993,
  author    = {Lauth, Jakob and M{\"u}ller, Ulrich and H{\"o}lderich, Wolfgang},
  title     = {Verfahren zur Herstellung von Alumo- und Silicoalumophosphaten mit AEL-Struktur unter Verwendung von 1,2-Bis(4-pyridyl)ethan : Europ{\"a}ische Patentschrift EP0532993B1 ; Ver{\"o}ffentlichungstag im Patentblatt: 29.04.1993 / Anmelder: BASF AG, 6700 Ludwigshafen. Erfinder: Ulrich M{\"u}ller ; Wolfgang H{\"o}lderich ; G{\"u}nter Lauth},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {[M{\"u}nchen u.a.]},
  pages     = {9 S.},
  year      = {1993},
  language  = {de}
}
@book{GartzenHeilMang1993,
  author    = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas},
  title     = {Verfahren zum Behandeln von miteinander mittels Haftvermittler verbundene Materialien / Offenlegungsschrift DE 4127705 A1 ; Offenlegungstag 25.02.1993 / Anmelder: Schering AG},
  publisher = {Deutsches Patentamt},
  address   = {M{\"u}nchen},
  pages     = {4 S.},
  year      = {1993},
  language  = {de}
}
@book{LauthMuellerHoelderich1993,
  author    = {Lauth, Jakob and M{\"u}ller, Ulrich and Hoelderich, Wolfgang},
  title     = {Farbige, kristalline Alumophosphate und/oder Silicoalumophosphate vom AEL-Typ oder VFI-Typ ; Europ{\"a}ische Patentanmeldung EP0534289A1 ; Ver{\"o}ffentlichungstag im Patentblatt: 06.05.1993 / BASF AG, 6700 Ludwigshafen. Erfinder: G{\"u}nther Lauth; Ulrich M{\"u}ller ; Wolfgang Hoelderich ...},
  publisher = {Europ{\"a}isches Patentamt},
  address   = {[M{\"u}nchen u.a.]},
  pages     = {15 S.},
  year      = {1993},
  language  = {de}
}
@book{LauthHoelderichWagenblast1993,
  author    = {Lauth, Jakob and Hoelderich, Wolfgang and Wagenblast, Gerhard},
  title     = {Molecular sieves containing azo dyes ; Internationale [Pantent]anmeldung WO93/17965 ; Ver{\"o}ffentlichungsdatum: 16.09.1993 / Anmelder: BASF AG},
  publisher = {Weltorganisation f{\"u}r geistiges Eigentum, Internat. B{\"u}ro},
  address   = {[Genf]},
  pages     = {45 S.},
  year      = {1993},
  language  = {en}
}
@book{LauthHoelderichWagenblast1993,
  author    = {Lauth, Jakob and Hoelderich, Wolfgang and Wagenblast, Gerhard},
  title     = {Molekularsiebe, enthaltend Farbstoffe auf Basis von Indigo = Molecular sieves containing indigo-based dyes ; Internationale [Pantent]anmeldung WO 93/17966 ; Ver{\"o}ffentlichungsdatum 16.09.1993 / Anmelder: BASF AG},
  publisher = {Weltorganisation f{\"u}r geistiges Eigentum, Internat. B{\"u}ro},
  address   = {[Genf]},
  pages     = {29 S.},
  year      = {1993},
  language  = {de}
}
@book{Sparla1993,
  author    = {Sparla, Peter},
  title     = {Experimentelle Untersuchungen zur Ermittlung des Brechungsindex der Atmosph{\"a}re mit Hilfe von elektronischen Sensoren},
  publisher = {Geod{\"a}tisches Inst. der Rheinisch-Westf{\"a}lischen Techn. Hochsch.},
  address   = {Aachen},
  pages     = {188 S. : Ill., graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{Pfeiffer1993,
  author    = {Pfeiffer, Johann},
  title     = {Rechnergest{\"u}tzte Auslegung von Seiltrieben},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {1993},
  language  = {de}
}
@book{KleemannMeliss1993,
  author    = {Kleemann, Manfred and Meliß, Michael},
  title     = {Regenerative Energiequellen. 2., v{\"o}llig neu bearb. Aufl.},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3-540-55085-2},
  pages     = {XXIII, 315 S. : Ill., graph. Darst., Kt},
  year      = {1993},
  language  = {de}
}
@book{Meliss1993,
  author    = {Meliß, Michael},
  title     = {Erneuerbare Energien verst{\"a}rkt nutzen!},
  publisher = {Bundesministerium f{\"u}r Wirtschaft},
  address   = {Bonn},
  pages     = {132 S. : Ill., graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{Wahle1993,
  author    = {Wahle, Michael},
  title     = {Kinematik. - (Dynamik ; 1)},
  edition   = {1. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-930085-25-9},
  pages     = {72 S. : graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{SchmidtMuellerStoecker1993,
  author    = {Schmidt, Ludwig and M{\"u}ller, Thomas and St{\"o}cker, Ernst E.},
  title     = {Die Organschaft im K{\"o}rperschaftsteuer-, Gewerbesteuer- und Umsatzsteuerrecht},
  edition   = {4. Aufl.},
  publisher = {Verl. Neue Wirtschafts-Briefe},
  address   = {Herne},
  isbn      = {3-482-44604-0},
  pages     = {393 S.},
  year      = {1993},
  language  = {de}
}
@book{FiedlerWollert1993,
  author    = {Fiedler, J{\"o}rg and Wollert, J{\"o}rg},
  title     = {C f{\"u}r die Automatisierungspraxis : Grundlagen, Algorithmen, Beispiele},
  publisher = {D{\"u}sseldorf},
  address   = {VDI-Verl.},
  isbn      = {3-18-401320-0},
  pages     = {VIII, 278 S.},
  year      = {1993},
  language  = {de}
}
@book{Schuermann1994,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Metropole : Themen zur Großstadt},
  address   = {Aachen},
  pages     = {170 Bl.},
  year      = {1994},
  language  = {de}
}
@book{Schuermann1994,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Pegel K{\"o}ln},
  publisher = {John},
  address   = {K{\"o}ln},
  isbn      = {3-88903-997-9},
  pages     = {143 S. : nur Ill.},
  year      = {1994},
  language  = {de}
}
@book{Call1994,
  author    = {Call, Guido},
  title     = {Eine kontaktsiuative Erkl{\"a}rung der TV - Werbewirkung unter Ber{\"u}cksichtigung aktueller TV - Nutzungsgewohnheiten},
  publisher = {Inst. f{\"u}r Wirtschaftswiss.},
  address   = {Aachen},
  pages     = {17 S., [2 Bl.]: graph. Darst.},
  year      = {1994},
  language  = {de}
}
@book{JacobsGebhardt1994,
  author    = {Jacobs, Stephan and Gebhardt, Michael},
  title     = {CoDecide - ein Baukasten zur Implemetierung von Werkzeugen zur Sichtenkopplung : [qualitative Entscheidungsunterst{\"u}tzung f{\"u}r Gruppen]; interner Bericht / St. Jacobs ; M. Gebhardt},
  publisher = {RWTH},
  address   = {Aachen},
  pages     = {14 Bl. : graph. Darst.},
  year      = {1994},
  language  = {de}
}
@book{JacobsJarke1994,
  author    = {Jacobs, Stephan and Jarke, Matthias},
  title     = {Requirements information management : the NATURE approach / RWTH Aachen, Fachgruppe Informatik. M. Jarke},
  publisher = {RWTH, Fachgruppe Informatik},
  address   = {Aachen},
  pages     = {27 S : graph. Darst.},
  year      = {1994},
  language  = {en}
}
@book{Hoepner1994,
  author    = {Hoepner, Gert},
  title     = {Computereinsatz bei Befragungen},
  publisher = {Dt. Univ.-Verl.},
  address   = {Wiesbaden},
  isbn      = {3-8244-0206-8},
  pages     = {XX, 289 S. : graph. Darst.},
  year      = {1994},
  language  = {de}
}