J. Eisenstein, B. O'Connor, N. Smith, and E. Xing. Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing, page 1277--1287. Stroudsburg, PA, USA, Association for Computational Linguistics, (2010)
H. Namgoong, and H. Kim. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 351--364. Berlin, Heidelberg, Springer Verlag, (November 2007)
C. Goldman, A. Langer, and J. Rosenschein. Proceedings of the First International Conference on Practical Applications of Intelligent Agents and Multi-Agents Technology (PAAM96), (1996)