@bookPeckhaus_1991, title=Modern Logic 1 (1990/91), H. 2/3 (Winter 1990/91), Special issue commemorating the centenary of the publication of the first volume of Ernst Schröder’s Vorlesungen über die Algebra der Logik, volume=H. 2/3, year=1991 

@articlePeckhaus_1991, title=Introduction, volume=1, number=2/3, journal=Modern Logic, author=Peckhaus, Volker, year=1991, pages=113–116 

@bookEke_1991, place=Paderborn, title=Die erfundene Wahrnehmung. Annäherung an Herta Müller, publisher=Igel, year=1991 

@inproceedingsDomik_1991, place=Berlin, Heidelberg, title=The role of visualization in understanding data, booktitle=New Results and New Trends in Computer Science, publisher=Springer Berlin Heidelberg, author=Domik, Gitta, editor=Maurer, HermannEditor, year=1991, pages=91–107 

@inproceedingsKrauter_Hanitsch_Strauss_1991, title=Simulation-Program for Selecting Efficiency Improving Strategies of PV-Module-Encapsulations under Operating Conditions, booktitle=Proceedings of “Renewable Energy Sources ”, Prag (CFSR), 1.–4. Juli 1991, Band 3, S. 48–53., author=Krauter, Stefan and Hanitsch, Rolf and Strauss, Philipp, year=1991 

@inbookStelter_Sextro_1991, series=International Series of Numerical Mathematics / Internationale Schriftenreihe zur Numerischen Mathematik / S\rquote erie Internationale d’Analyse Num\rquote erique, title=Bifurcations in Dynamic Systems with Dry Friction, volume=97, DOI=10.1007/978-3-0348-7004-7_44, booktitle=Bifurcation and Chaos: Analysis, Algorithms, Applications, publisher=Birkhäuser Basel, author=Stelter, Peter and Sextro, Walter, editor=Seydel, R. and Schneider, F.W. and Küpper, T. and Troger, H.Editors, year=1991, pages=343–347, collection=International Series of Numerical Mathematics / Internationale Schriftenreihe zur Numerischen Mathematik / S\rquote erie Internationale d’Analyse Num\rquote erique 

@inproceedingsDomik_Mickus_1991, title=Visualization in the Analysis Cycle of Observational Data, in Analyzing and Modeling Data and Knowledge, booktitle=Proceedings of the 15th Annual Conference of the “Gesellschaft für Klassifikation e.V.” University of Salzburg, author=Domik, Gitta and Mickus, KD , editor=Schader, M.Editor, year=1991, pages=267–276 

@inproceedingsHaeb-Umbach_Ney_1991, title=A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition, booktitle=EUROSPEECH, Genova, author=Haeb-Umbach, Reinhold and Ney, Hermann, year=1991 

@bookHellebrand_1991, place=Verlag Düsseldorf: VDI Verlag, series=10, title=Synthese vollständig testbarer Schaltungen, publisher=Verlag Düsseldorf: VDI Verlag, author=Hellebrand, Sybille, year=1991, collection=10 

@articlePeckhaus_1991, title=Ernst Schröder und die ,pasigraphischen Systeme‘ von Peano und Peirce, volume=1, number=2/3, journal=Modern Logic, author=Peckhaus, Volker, year=1991, pages=174–205 

@inproceedingsBöcker_Janning_1991, title=Discrete-Time Flux Observer for PWM Inverter-Fed Induction Motors, volume=2, booktitle=EPE’91, Florence, 1991, author=Böcker, Joachim and Janning, Jörg, year=1991, pages=171–176 

@articleBöcker_1991, title=Discrete-time model of an induction motor, volume=1, number=2, journal=European transactions on electrical power, author=Böcker, Joachim, year=1991, pages=65–71 

@inproceedingsPeckhaus_1991, series=Mitteilungen des Instituts für Wissenschaft und Kunst, title=Kurt Grelling und der Logische Empirismus [Abstract], volume=46, number=2, booktitle=Mitteilungen des Instituts für Wissenschaft und Kunst 46 (1991), Nr. 2 (= eWien 4 Berlin 4 Prag. Der Aufstieg der wissenschaftlichen Philosophie. Internationales Symposion aus Anlaß der Centenarien von Rudolf Carnap (189131970), Hans Reichenbach (189131953), Edgar Zilsel (189131944)“), author=Peckhaus, Volker, year=1991, pages=24, collection=Mitteilungen des Instituts für Wissenschaft und Kunst 

@inproceedingsPeckhaus_1991, place=o.O.u.J. (Uppsala), title=Logic in Transition: The Logical Calculi of Hilbert (1905) and Zermelo (1908) [Abstract], booktitle=Abstracts of the 9th International Congress of Logic, Methodology and Philosophy of Science, Uppsala, August 7–14, 1991, Bd. 2: General Philosophy of Science. Sections 6–9, author=Peckhaus, Volker, year=1991, pages=158 

@articleNoé_RODLER_EBBERG_GAUKEL_NOLL_WITTMANN_AURACHER_1991, title=COMPARISON OF POLARIZATION HANDLING METHODS IN COHERENT OPTICAL-SYSTEMS, volume=9, DOI=10.1109/50.90934, number=10, journal=JOURNAL OF LIGHTWAVE TECHNOLOGY, author=Noé, Reinhold and RODLER, HJ and EBBERG, A and GAUKEL, G and NOLL, B and WITTMANN, J and AURACHER, F, year=1991, pages=1353–1366 

@articleKitzerow_Crooker_1991, title=Polymer-dispersed cholesteric liquid crystals - challenge for research and application, volume=122, DOI=10.1080/00150199108226040, number=1, journal=Ferroelectrics, publisher=Informa UK Limited, author=Kitzerow, Heinz-Siegfried and Crooker, Peter P., year=1991, pages=183–196 

@articleKitzerow_Crooker_Heppke_1991, title=Line shapes of field-induced blue-phase-III selective reflections, volume=67, DOI=10.1103/physrevlett.67.2151, number=16, journal=Physical Review Letters, publisher=American Physical Society (APS), author=Kitzerow, Heinz-Siegfried and Crooker, P. and Heppke, G., year=1991, pages=2151–2154 

@articleKitzerow_Jérôme_Pieranski_1991, title=Strain-induced anchoring transitions, volume=174, DOI=10.1016/0378-4371(91)90423-a, number=1, journal=Physica A: Statistical Mechanics and its Applications, publisher=Elsevier BV, author=Kitzerow, Heinz-Siegfried and Jérôme, B. and Pieranski, P., year=1991, pages=163–194 

@articleKitzerow_1991, title=The Effect of Electric Fields on Blue Phases, volume=202, DOI=10.1080/00268949108035659, number=1, journal=Molecular Crystals and Liquid Crystals, publisher=Informa UK Limited, author=Kitzerow, Heinz-Siegfried, year=1991, pages=51–83 

@articleKitzerow_Schmid_Heppke_1991, title=Chirale Flüssigkristalle - Selektive Reflexion in Phasen ohne Spiegelsymmetrie, journal=Labor 2000, Sonderausgabe der Zeitschrift LaborPraxis, Vogel Verlag, München, author=Kitzerow, Heinz-Siegfried and Schmid, H. and Heppke, G., year=1991, pages=6–11