Zimmer, Detmar. Flankenspielorientierte Einstellung Der Hypoid- Und Kegelradgetriebe. Universität Stuttgart, 1989.
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Ebert, Jürgen, and Gregor Engels. “Konzepte Einer Software-Architektur-Beschreibungssprache.” In Software-Entwicklung: Konzepte, Erfahrungen, Perspektiven, Fachtagung, 1989, Marburg (Germany), 212:238–50. Informatik-Fachberichte. Berlin/Heidelberg: Springer, 1989.
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Engels, Gregor. “CADDY-O: Syntaxgestütztes, Graphisches Entwerfen Konzeptioneller Datenbankschemata.” In Tagungsband GI-Fachtagung “Interaktive Schnittstellen Für Informationssysteme”, TU Clausthal, Notizen Zu Interaktive Systeme, 18:1–16, 1989.
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Engels, Gregor, Uwe Hohenstein, Klaus Hülsmann, Perdita Löhr-Richter, and Hans-Dietrich Ehrich. “CADDY: Computer-Aided Design of Non-Standard Databases.” In Proceedings of the International Conference on System Development Environments &; Factories, Berlin, Germany. Berlin: Pitman Publishing, 1989.
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Engels, Gregor. Benutzerschnittstelle Und Architektur Der Integrierten Datenbankentwurfsumgebung CADDY (Kurzfassung). TU Braunschweig, 1989.
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Engels, Gregor, and Wilhelm Schäfer. Programmentwicklungsumgebungen: Konzepte Und Realisierung. Stuttgart: Teubner, 1989.
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Dellnitz, Michael, and Bodo Werner. “Computational Methods for Bifurcation Problems with Symmetries—with Special Attention to Steady State and Hopf Bifurcation Points.”https://doi.org/10.1016/0377-0427(89)90150-7__Journal of Computational and Applied Mathematics, 1989, 97–123.https://doi.org/10.1016/0377-0427(89)90150-7 .
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Just, Bettina, Friedhelm Meyer auf der Heide, and Avi Wigderson. “On Computations with Integer Division.”https://doi.org/10.1051/ita/1989230101011__RAIRO - Theoretical Informatics and Applications, 1989, 101–11.https://doi.org/10.1051/ita/1989230101011 .
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Dietzfelbinger, M., and Friedhelm Meyer auf der Heide. “An Optimal Parallel Dictionary.”https://doi.org/10.1145/72935.72974__In Proceedings of the First Annual ACM Symposium on Parallel Algorithms and Architectures  - SPAA ’89, 1989.https://doi.org/10.1145/72935.72974 .
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Meyer auf der Heide, Friedhelm. “On Genuinely Time Bounded Computations.”https://doi.org/10.1007/bfb0028969__In STACS 89. Berlin/Heidelberg, 1989.https://doi.org/10.1007/bfb0028969 .
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Meyer auf der Heide, Friedhelm, and Rolf Wanka. “Time-Optimal Simulations of Networks by Universal Parallel Computers.”https://doi.org/10.1007/bfb0028978__In STACS 89. Berlin/Heidelberg, 1989.https://doi.org/10.1007/bfb0028978 .
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Meyer auf der Heide, Friedhelm. “Computing Minimum Spanning Forests on 1- and 2-Dimensional Processor Arrays.”https://doi.org/10.1007/bfb0028983__In STACS 89. Berlin, Heidelberg, 1989.https://doi.org/10.1007/bfb0028983 .
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Fuchssteiner, Benno, and Gudrun Oevel. “Geometry and Action-Angle Variables of Multi Soliton Systems.” Rev. Math. Phys., no. 1 (1989): 415–79.
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Haeb-Umbach, Reinhold, and Heinrich Meyr. “A Systematic Approach to Carrier Recovery and Detection of Digitally Phase Modulated Signals on Fading Channels.” IEEE Transactions on Communications, 1989.
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Peckhaus, Volker. “Die Institutionalisierung der Mathematischen Logik in Deutschland.” In XVIIIth International Congress of History of Science. General Theme: Science and Political Order. Wissenschaft und Staat. 1st — 9th August 1989 Hamburg — München. Abstracts, edited by Fritz Krafft and Christoph J. Scriba, Vol. .4. Hamburg/München, 1989.
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Wunderlich, Hans-Joachim, and Sybille Hellebrand. “The Pseudo-Exhaustive Test of Sequential Circuits.”https://doi.org/10.1109/test.1989.82273__In IEEE International Test Conference (ITC’89), 19–27. Washington, DC, USA: IEEE, 1989.https://doi.org/10.1109/test.1989.82273 .
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Tophinke, Doris, ed. Plattdeutsch - ein Pflegefall? Osnabrück: Manuskriptdruck, 1989.
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Noé, Reinhold, H RODLER, A EBBERG, G GAUKEL, and F AURACHER. “PATTERN-INDEPENDENT FSK HETERODYNE TRANSMISSION WITH ENDLESS POLARIZATION CONTROL AND A 119 PHOTOELECTRONS BIT RECEIVER SENSITIVITY.”https://doi.org/10.1080/01468038908202887__FIBER AND INTEGRATED OPTICS 8, no. 4 (1989): 303–6.https://doi.org/10.1080/01468038908202887 .
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Noé, Reinhold, JL GIMLETT, RS VODHANEL, and S TSUJI. “POLARIZATION-INSENSITIVE, 500 MBIT/S FSK TRANSMISSION OVER 153KM BY PASSIVE POLARIZATION SWITCHING.”https://doi.org/10.1049/el:19890003__ELECTRONICS LETTERS 25, no. 1 (1989): 4–5.https://doi.org/10.1049/el:19890003 .
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Noé, Reinhold, JL GIMLETT, RS VODHANEL, and S TSUJI. “POLARIZATION-INSENSITIVE, 500 MBIT/S FSK TRANSMISSION OVER 153KM BY PASSIVE POLARIZATION SWITCHING.”https://doi.org/10.1049/el:19890003__ELECTRONICS LETTERS 25, no. 1 (1989): 4–5.https://doi.org/10.1049/el:19890003 .
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