M. Andries et al., “Graph Transformation for Specification and Programming,” Science of Computer Programming, vol. 34, no. 1, pp. 1–54, 1999.
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DOI: http://dx.doi.org/10.1016/S0167-6423(98)00023-9

H. Ehrig, G. Engels, H. J. Kreowski, and G. Rozenberg, Handbook of Graph Grammars and Computing by Graph Transformation: Vol. 2: Applications, Languages, and Tools. River Edge, NJ, USA: World Scientific Publishing Co., Inc., 1999.
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R. Heckel, G. Engels, H. Ehrig, and G. Taentzer, “A View-based Approach to System Modeling Based on Open Graph Transformation Systems,” in Handbook of Graph Grammars and Computing by Graph Transformations, Volume 2: Applications, Languages and Tools, Singapore: World Scientific, 1999, pp. 639–668.
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R. Heckel, G. Engels, H. Ehrig, and G. Taentzer, “Classification and Comparison of Module Concepts for Graph Transformation Systems,” in Handbook of Graph Grammars and Computing by Graph Transformations, Volume 2: Applications, Languages and Tools, vol. 2, Singapore: World Scientific, 1999, pp. 669–689.
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A. Eggert, Ed., Kundenbindung aus Kundensicht: Konzeptualisierung, Operationalisierung, Verhaltenswirksamkeit. Wiesbaden: Gabler, 1999.
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S. Eshlaghi, C. Meier, D. Suter, D. Reuter, and A. D. Wieck, “Depth profile of the implantation-enhanced intermixing of Ga+ focused ion beam in AlAs/GaAs quantum wells,” Journal of Applied Physics, vol. 86, no. 11, pp. 6605–6607, 1999.
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DOI: 10.1063/1.371720

H.-H. Kremer, “Realisierung fächer- und lernortübergreifender Ausbildungskonzepte,” in Lehren und Lernen in der Aus- und Weiterbildung, P. F. E. Sloane, R. Bader, and G. Straka, Eds. Opladen, 1999.
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H.-H. Kremer and P. F. E. Sloane, “Lernfelder - Motor didaktischer Innovationen,” Kölner Zeitschrift für Wirtschaft und Pädagogik, no. 26, pp. 37–60, 1999.
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H.-H. Kremer, “Can students act? Explorative Studie zum Erfolg fächer- und lernortübergreifender Maßnahmen,” Kölner Zeitschrift für Wirtschaft und Pädagogik, no. 27, pp. 93–110, 1999.
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H.-H. Kremer and K. Wilbers, “Das virtuelle Seminar ‘Wirtschaftspädagogik Köln-München,’” in Virtus, virtuelle Universitätssysteme Köln: Jahresbericht 1998/1999, Bertelsmann Stiftung, Ed. Gütersloh, 1999, pp. 93–99.
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H.-H. Kremer and P. F. E. Sloane, “Der implizite Lerner in multimedialen Lernarrangements,” Kölner Zeitschrift für Wirtschaft und Pädagogik, no. 25, pp. 117–144, 1999.
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H. Karl, “Towards Quality of Service for Parallel Computing: An Overview of the MILAN Project,” in High-Performance Computing and Networking, 7th International Conference, HPCN Europe 1999, Amsterdam, The Netherlands, April 12-14, 1999, Proceedings, 1999, pp. 841--850.
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DOI: 10.1007/BFb0100644

H. Karl, “Coscheduling through Synchronized Scheduling Servers -- A Prototype and Experiments,” in Parallel and Distributed Processing, 11 IPPS/SPDP’99 Workshops Held in Conjunction with the 13th International Parallel Processing Symposium and 10th Symposium on Parallel and Distributed Processing, San Juan, Puerto Rico, USA, April 12-16, 1999, Proceedings, 1999, pp. 1115--1129.
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DOI: 10.1007/BFb0097997

K. Popp and W. Sextro, “Schwingungsanalyse von vorgespannten Schaufeln mit Deckplatten im Schaufelkranz,” in Forschungsvereinigung Verbrennungskraftmaschinen (FW) -lnformationstagung Turbinen, 1999, no. 504, pp. 21–38.
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W. Sextro, “Experimental verification of a non-Hertzian contact model,” in International conference on computational methods in contact mechanics, 1999, pp. 181–190.
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W. Sextro, “Forced Vibration of Elastic Structures with Friction Contacts,” in ASME Design Engineering Technical Conferences, 1999, no. DET/VIB-8180, pp. 1–10.
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W. Sextro and K. Popp, “Ein ebenes Reibkontaktmodell zur Berechnung von Schaufelschwingungen mit Reibelementen,” Zeitschrift für angewandte Mathematik und Mechanik (ZAMM), vol. 79, pp. 311–312, 1999.
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W. Sextro and K. Popp, “Schwingungsanalyse von vorgespannten Schaufeln mit Deckplatten im Schaufelkranz,” in Forschungsvereinigung Verbrennungskraftmaschinen (FW), 1999, no. 686, p. 56.
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M. Festing, Y. Groening, and R. Kabst, “Financial Participation in Europe: Determinants and Outcomes,” Economic and Industrial Democracy., vol. 20, no. 2, pp. 295–329, 1999.
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J. Bendfeld, G. Bettenwort, E. Ortjohann, and J. Voss, “Layout for a wind-power-driven, reverse osmosis installation for desalting brackish water in operation on an island,” in Proceedings of the 1999 European Wind Energy Conference, 1-5 March 1999 Nice, France, -978, 1999.
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