Hüllermeier, E. (1999). Toward models of case-based decision making. In H. J. Zimmermann (Ed.), in Proceedings EUFIT-99 7th European Congress on Intelligent Techniques and Soft Computing, Aachen, Germany.
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Hüllermeier, E. (1999). A possibilistic formalization of case-based reasoning and decision making. In B. Reusch (Ed.), in Proceedings of the 6th International Conference on Computational Intelligence, Dortmund, Germany (Vol. 1625, pp. 411–420). Springer.
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Hüllermeier, E. (1999). Numerical methods for fuzzy initial value problems. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 7(5), 439–461.
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Hüllermeier, E. (1999). Approximation of uncertain funtional relationships. Fuzzy Sets and Systems, 101(2), 227–240.
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Hüllermeier, E. (1999). Qualitatives Schließen und Qualitative Simulation. In H. Szczerbicka &; T. Uthmann (Eds.), Modellierung, Simulation und Künstliche Intelligenz (pp. 277–310). SCS Publishing House, Erlangen.
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Hüllermeier, E., &; Giersch, C. (1998). Fuzzy sets and modelling of uncertainty in biological systems. In In Proceedings IPMU-98 7th International Conference on Information Processing and Management  of Uncertainty in Knowledge-Based Systems, Paris, La Sorbonne (pp. 1857–1864). Editions E.D.K.
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Hüllermeier, E. (1998). A Bayesian approach to case-based probalistic reasoning. In In Proceedings IPMU-98 7th International Conference on Information Processing and Management  of Uncertainty in Knowledge-Based Systems, Paris, La Sorbonne (pp. 1296–1303). Editions E.D.K.
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Hüllermeier, E. (1998). Numerical solutions for fuzzy initial value problems. In P. Borne, M. Ksouri, &; A. El Kamel (Eds.), in Proceedings CESA-98, IMACS Multiconference on Computaional Engineering in Systems Applications, Symposium on Applied Mathematics and Optimization, Nabeul-Hammamet, Tunesia.
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Hüllermeier, E. (1998). Case-based probality and case-based decision making. In L. Gierl &; M. Lenz (Eds.), in Proceedings of the 6th German Workshop on Case-Based Reasoning, Berlin, Germany (pp. 13–22).
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Hüllermeier, E. (1998). Fuzzy dynamics of compartmental systems. In H. J. Zimmermann (Ed.), in Proceedings EUFIT-98 6th European Congress on Intelligent Techniques and Soft Computing, Aachen, Germany.
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