Büker, Petra, and Susanne Kampe. “Auf den Spuren der alten Stadtmauer: Ein Unterrichtsgang um die Altstadt Paderborns.” Paderborn - vom Werden und Wachsen unserer Stadt (Materialien, Unterrichtsentwürfe, Arbeitsmittel),  (Paderborner Geographische Studien; Bd.3), edited by Diethelm Düsterloh, Selbstverlag des Faches Geographie der Universität-GH-Paderborn, 1991, pp. 105–09.
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Peckhaus, Volker, editor. 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. Vol. H. 2/3, 1991.
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Peckhaus, Volker. “Introduction.” Modern Logic, vol. 1, no. 2/3, 1991, pp. 113–16.
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Eke, Norbert Otto. “Die deutschsprachige Literatur Osteuropas und ihre Rezeption in der Bundesrepublik. Probleme und Chancen einer ‘kleinen Literatur.’” Deutsche Studien 29, vol. 29, no. H. 113, 1991, pp. 30–50.
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Domik, Gitta. “The Role of Visualization in Understanding Data.” New Results and New Trends in Computer Science, edited by Hermann Maurer, Springer Berlin Heidelberg, 1991, pp. 91–107.
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Krauter, Stefan, et al. “Simulation-Program for Selecting Efficiency Improving Strategies of PV-Module-Encapsulations under Operating Conditions.” Proceedings of “Renewable Energy Sources ”, Prag (CFSR), 1.–4. Juli 1991, Band 3, S. 48–53., 1991.
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Stelter, Peter, and Walter Sextro. “Bifurcations in Dynamic Systems with Dry Friction.”10.1007/978-3-0348-7004-7_44__Bifurcation and Chaos: Analysis, Algorithms, Applications, edited by R. Seydel et al., vol. 97, Birkhäuser Basel, 1991, pp. 343–47, doi:10.1007/978-3-0348-7004-7_44.
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DOI: 10.1007/978-3-0348-7004-7_44

Domik, Gitta, and KD Mickus. “Visualization in the Analysis Cycle of Observational Data, in Analyzing and Modeling Data and Knowledge.” Proceedings of the 15th Annual Conference of the “Gesellschaft Für Klassifikation e.V.” University of Salzburg, edited by M. Schader, 1991, pp. 267–76.
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Haeb-Umbach, Reinhold, and Hermann Ney. “A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition.” EUROSPEECH, Genova, 1991.
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Hellebrand, Sybille. Synthese Vollständig Testbarer Schaltungen. Verlag Düsseldorf: VDI Verlag, 1991.
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Peckhaus, Volker. “Ernst Schröder und die ,pasigraphischen Systeme‘ von Peano und Peirce.” Modern Logic, vol. 1, no. 2/3, 1991, pp. 174–205.
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Böcker, Joachim, and Jörg Janning. “Discrete-Time Flux Observer for PWM Inverter-Fed Induction Motors.” EPE’91, Florence, 1991, vol. 2, 1991, pp. 171–76.
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Böcker, Joachim. “Discrete-Time Model of an Induction Motor.” European Transactions on Electrical Power, vol. 1, no. 2, 1991, pp. 65–71.
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Noé, Reinhold, et al. “COMPARISON OF POLARIZATION HANDLING METHODS IN COHERENT OPTICAL-SYSTEMS.”10.1109/50.90934__JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 9, no. 10, 1991, pp. 1353–66, doi:10.1109/50.90934.
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DOI: 10.1109/50.90934

Goser, K., et al. “Application and Implementation of Neural Networks in Microelectronics.” Artificial Neural Networks, edited by Alberto Prieto, Springer Berlin Heidelberg, 1991, pp. 243–259.
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Peckhaus, Volker. Hilbertprogramm und Kritische Philosophie. Das Göttinger Modell interdisziplinärer Zusammenarbeit zwischen Mathematik und Philosophie. Vol. 7, Vandenhoeck &; Ruprecht, 1990.
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Krauter, Stefan, and Rolf Hanitsch. “The Influence of the Capsulation on the Efficiency of PV-Modules.”10.1016/B978-0-08-037539-7.50062-4__Proceedings of the 1st World Renewable Energy Congress, Reading (UK), 23.–28. September 1990, Band 1, S. 141–144., 1990, doi:10.1016/B978-0-08-037539-7.50062-4.
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DOI: 10.1016/B978-0-08-037539-7.50062-4

Haeb-Umbach, Reinhold, et al. “Coding and Signal Processing for a Magneto-Optic Resonant Bias Coil Overwrite Experiment.” International Conference on Communication, Atlanta, 1990.
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Hellebrand, Sybille, et al. Generating Pseudo-Exhaustive Vectors for External Testing. 1990.
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Margaritis, Basile. Analyse eines Sperr-Flußkonverters. 1990.
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