Ehrig, H., Heckel, R., Padberg, J., &; Rozenberg, G. (1998). Graph Transformation and Other Rule-Based Formalisms with Incomplete Information. In Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany).
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Ehrig, H., Heckel, R., Llabrés, M., Orejas, F., Padberg, J., &; Rozenberg, G. (1998). Double-Pullback Graph Transitions: A Rule-Based Framework with Incomplete Information. In Selected papers from the 6th International Workshop on Theory and Application of Graph Transformations (TAGT 1998), Paderborn (Germany) (Vol. 1764, pp. 85–102). Berlin/Heidelberg: Springer.http://dx.doi.org/10.1007/b75045 
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DOI: http://dx.doi.org/10.1007/b75045

Ehrig, H., Engels, G., Heckel, R., &; Taentzer, G. (1998). Classification and Comparison of Modularity Concepts for Graph Transformation Systems. In Pre-Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT ’98), Paderborn (Germany) (pp. 122–131). University of Paderborn.
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Gadducci, F., Heckel, R., &; Koch, M. (1998). Model Checking Graph-Interpreted Temporal Formulas. In Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany). Paderborn.
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Gadducci, F., Heckel, R., &; Llabrés, M. (1998). DPO Derivations via Disconnected Rules. In Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany).
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Sauer, S., &; Zukunft, O. (1998). Event Processing in Mobile and Active Database Systems Using Broadcasts. In Proceedings of the 9th International Workshop on Database and Expert Systems Applications (DEXA 1998), Vienna (Austria) (pp. 420–426). Washington, DC, USA: IEEE Computer Society.
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Ehrig, H., Heckel, R., Llabrés, M., &; Orejas, F. (1998). Construction and Characterisation of Double-Pullback Graph Transitions. In Proceedings of the 6th International Workshop on Theory and Application of Graph Transformation (TAGT 1998), Paderborn (Germany).
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Friedrich, A., Kabst, R., &; Weber, W. (1998). Job Rotation: Common Practice in Organisations? (Vol. 23, pp. 8–9).
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Weber, W., Festing, M., &; Kabst, R. (1998). Conference Proceedings: Sixth Conference on International Human Resource Management, Paderborn 1998.
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Abberger, K., Feng, Y., &; Heiler, S. (1998). Nonparametric Smoothing and Quantile Estimation in Time Series. In G. Bol,  Gholamreza Nakhaeizadeh , &; K.-H. Vollmer (Eds.), Risk Measurement, Econometrics and Neural Networks. Contributions to Economics.  (pp. 1–16). Heidelberg: Physica-Verlag HD.
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Heiler, S., &; Feng, Y. (1998). A simple root n bandwidth selector for nonparametric regression. Journal of Nonparametric Statistics, 9(1), 1–21.
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Feng, Y., &; Heiler, S. (1998). Locally Weighted Autoregression. In R. Galata &; H. Küchenhoff (Eds.), Econometrics in Theory and Practice (pp. 101–117). Heidelberg: Physica-Verlag HD.
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Pull, K., &; Schneider, M. (1998). Beschäftigungs-und Lohndynamik in hochqualifizierten Unternehmen.
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Bliemel, F., &; Eggert, A. (1998). Kundenbindung - die neue Sollstrategie? Marketing - Zeitschrift Für Forschung Und Praxis.
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Heckel, R. (1998). Open Graph Transformation Systems: A New Approach to the Compositional Modelling of Concurrent and Reactive Systems.
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Tscheuschner, R. D., Hoch, S., Leschinsky, E., Meier, C., Theis, S., &; Wieck, A. D. (1998). Robustness of the Quantum Hall Effect, Sample Size Versus Sample Topology, and Quality Control Management of III–V Molecular Beam Epitaxy. International Journal of Modern Physics B, 12(11), 1147–1170.https://doi.org/10.1142/s0217979298000636 
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Kremer, H.-H., &; Schwetz, U. (1998). Selbstgesteuerte Weiterbildung von Ausbildern. Eine betriebspädagogische Studie. Kölner Zeitschrift für Wirtschaft und Pädagogik, (25), 189–193.
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Kremer, H.-H., &; Wilbers, K. (1998). Virtuelles Seminar “Wipäd Köln - München” - Konzeption und erste Erfahrungen. Kölner Zeitschrift für Wirtschaft und Pädagogik, (25), 99–117.
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Karl, H. (1998). Bridging the gap between distributed shared memory and message passing. Concurrency - Practice and Experience, (11–13), 887--900.https://doi.org/10.1002/(SICI)1096-9128(199809/11)10:11/13&#38;#60;887::AID-CPE416&#38;#62;3.0.CO;2-0 
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Baratloo, A., Karaul, M., Karl, H., &; M. Kedem, Z. (1998). An infrastructure for network computing with Java applets. Concurrency -- Practice and Experience, (11–13), 1029--1041.https://doi.org/10.1002/(SICI)1096-9128(199809/11)10:11/13&#38;#60;1029::AID-CPE412&#38;#62;3.0.CO;2-U 
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