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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DOI: 10.1109/test.1989.82273

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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DOI: 10.1080/01468038908202887

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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DOI: 10.1049/el:19890003

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 .
LibreCat: /record/38297
DOI: 10.1049/el:19890003

Rammig, Franz Josef, and Wolfgang Müller. “ODICE: Object-Oriented Hardware Description in CAD Environment.” In Proc. of the Ninth IFIP Symposium on CHDLs and Their Application. Washington DC, 1989.
LibreCat: /record/39585

Heppke, G., B. Jéròme, Heinz-Siegfried Kitzerow, and P. Pieranski. “Observation of a Hexagonal Blue Phase in Systems with Negative Dielectric Anisotropy.”https://doi.org/10.1080/02678298908026387__Liquid Crystals 5, no. 3 (1989): 813–28.https://doi.org/10.1080/02678298908026387 .
LibreCat: /record/40069
DOI: 10.1080/02678298908026387

Heppke, G., B. Jérôme, Heinz-Siegfried Kitzerow, and P. Pieranski. “Electrostriction of the Cholesteric Blue Phases BPI and BPII in Mixtures with Positive Dielectric Anisotropy.”https://doi.org/10.1051/jphys:0198900500190299100__Journal de Physique 50, no. 19 (1989): 2991–98.https://doi.org/10.1051/jphys:0198900500190299100 .
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DOI: 10.1051/jphys:0198900500190299100

Heppke, G., B. Jérôme, Heinz-Siegfried Kitzerow, and P. Pieranski. “Electrostriction of BPI and BPII for Blue Phase Systems with Negative Dielectric Anisotropy.”https://doi.org/10.1051/jphys:01989005005054900__Journal de Physique 50, no. 5 (1989): 549–62.https://doi.org/10.1051/jphys:01989005005054900 .
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DOI: 10.1051/jphys:01989005005054900

Schroeter-Wittke, Harald. “Das Besondere Buch: Komm, Herr, Segne Uns. Texte Und Melodien von Dieter Trautwein Und Befreundeten Autoren, Dazu Übertragungen von Liedern Und Liturgischen Gesängen Aus Der Ökumene von Ursula Und Dieter Trautwein.” Der Evangelische Erzieher, 1989.
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Schroeter-Wittke, Harald. “Bonhoeffer-Requiem. Eindringlich, Nicht Aufdringlich.” In Kirchentag ’89. Berichte Und Materialien Aus Berlin. , edited by Rüdiger Runge, 223–26. München, 1989.
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Schroeter-Wittke, Harald, Henning Schröer, and Helmut Simon. “Abenteuer Kirchentag. Henning Schröer Und Harald Schroeter Im Gespräch Mit Helmut Simon.” Gep Buchmagazin Frühjahr / Sommer , 1989, 3–5.
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Schroeter-Wittke, Harald. “Weg Oder Weg? Gedanken Bei Der Beschäftigung Mit Der Gruppe Supertramp.” Der Evangelische Erzieher 41 (1989): 280–86.
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Schroeter-Wittke, Harald. “God’s Love ‘Made Visible’. Eine Weihnachtsmusik von Dave Brubeck.” Der Evangelische Erzieher 41 (1989): 506–8.
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Hilgert, Joachim, and K.H. Hofmann. “Compactly Embedded Cartan Algebras and Invariant Cones in Lie Algebras.” Advances Math. 75 (1989): 168–201.
LibreCat: /record/51448

Hilgert, Joachim. “A Note on Howe’s Oscillator Semigroup.” Ann. Inst. Fourier 39 (1989): 663–88.
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Hilgert, Joachim, K.H. Hofmann, and J.D. Lawson, eds. Lie Groups, Convex Cones, and Semigroups. Oxford: Oxford University Press, 1989.
LibreCat: /record/51498