H. Alt, B. Behrends, and J. Blömer, “Approximate matching of polygonal shapes (extended abstract),” in Proceedings of the seventh annual symposium on Computational geometry  - SCG ’91, 1991.
LibreCat: /record/3048
DOI: 10.1145/109648.109669

J. Blömer, “Computing sums of radicals in polynomial time,” in Proceedings 32nd Annual Symposium of Foundations of Computer Science, 1991.
LibreCat: /record/3049
DOI: 10.1109/sfcs.1991.185434

V. Peckhaus, Ed., 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.
LibreCat: /record/17451

V. Peckhaus, “Introduction,” Modern Logic, vol. 1, no. 2/3, pp. 113–116, 1991.
LibreCat: /record/17472

N. O. Eke, “Die deutschsprachige Literatur Osteuropas und ihre Rezeption in der Bundesrepublik. Probleme und Chancen einer ‘kleinen Literatur,’” Deutsche Studien 29, vol. 29, no. H. 113, pp. 30–50, 1991.
LibreCat: /record/19438

G. Domik, “The role of visualization in understanding data,” in New Results and New Trends in Computer Science, 1991, pp. 91–107.
LibreCat: /record/21790

S. Krauter, R. Hanitsch, and P. Strauss, “Simulation-Program for Selecting Efficiency Improving Strategies of PV-Module-Encapsulations under Operating Conditions,” in Proceedings of “Renewable Energy Sources ”, Prag (CFSR), 1.–4. Juli 1991, Band 3, S. 48–53., Prag (CFSR), 1991.
LibreCat: /record/8082

P. Löhr-Richter and G. Engels, Incremental Design of Conceptual Database Schemata with CADDY. Leiden University, P.O. Box 9500, 2300 RA Leiden, The Netherlands: Leiden University, 1991.
LibreCat: /record/8188

P. Stelter and W. Sextro, “Bifurcations in Dynamic Systems with Dry Friction,” in Bifurcation and Chaos: Analysis, Algorithms, Applications, vol. 97, R. Seydel, F. W. Schneider, T. Küpper, and H. Troger, Eds. Birkhäuser Basel, 1991, pp. 343–347.
LibreCat: /record/8894
DOI: 10.1007/978-3-0348-7004-7_44

G. Domik and K. Mickus, “Visualization in the Analysis Cycle of Observational Data, in Analyzing and Modeling Data and Knowledge,” in Proceedings of the 15th Annual Conference of the “Gesellschaft für Klassifikation e.V.” University of Salzburg, Salzburg, 1991, pp. 267–276.
LibreCat: /record/16912

V. Peckhaus, “Ernst Schröder und die ,pasigraphischen Systeme‘ von Peano und Peirce,” Modern Logic, vol. 1, no. 2/3, pp. 174–205, 1991.
LibreCat: /record/17473

V. Peckhaus, “Logic in Transition: The Logical Calculi of Hilbert (1905) and Zermelo (1908) [Abstract],” in 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, 1991, p. 158.
LibreCat: /record/17822

W. Müller, “Contract-Oriented System Design and Specification,” 1991.
LibreCat: /record/39584

G. Lehrenfeld and W. Müller, “Validation of EXPRESS Models Using Prolog,” 1991.
LibreCat: /record/39583

H. Schroeter-Wittke, “Letzter Sonntag nach Epiphanias; Predigttext: 2. Korinther 4,6-10,” in Gottesdienstpraxis. Serie A. II. Perikopenreihe Band 1, vol. 132–139, H. Nitschke, Ed. Gütersloh: Gütersloher Verlagshaus, 1991.
LibreCat: /record/43478

K. Goser, U. Hilleringmann, and U. Rückert, “Application and implementation of neural networks in microelectronics,” in Artificial Neural Networks, 1991, pp. 243–259.
LibreCat: /record/39922

N. O. Eke, “Maximilian von Löwenthal,” in Literatur Lexikon. Autoren und Werke deutscher Sprache. Bd. 7, vol. 7, W. Killy, Ed. Gütersloh, München, 1990, p. 332.
LibreCat: /record/19490

H. Alt, J. Blömer, and H. Wagener, “Approximation of convex polygons,” in Automata, Languages and Programming, Berlin/Heidelberg: Springer-Verlag, 1990, pp. 703–716.
LibreCat: /record/3050
DOI: 10.1007/bfb0032068

V. Peckhaus, Hilbertprogramm und Kritische Philosophie. Das Göttinger Modell interdisziplinärer Zusammenarbeit zwischen Mathematik und Philosophie, vol. 7. Göttingen: Vandenhoeck &; Ruprecht, 1990.
LibreCat: /record/17445

N. O. Eke, N. Oellers, K. J. Skrodzki, and H. Steinecke, Nikolaus Lenau. Werke und Briefe. Historisch-kritische Gesamtausgabe. Bd. 6,1: Briefe 1838-1847. Teil 1: Text (Edition). Wien: Österreichischer Bundesverlag, Klett-Cotta, 1990.
LibreCat: /record/19151