R. Cooley, B. Mobasher, and J. Srivastava. Proceedings of the Ninth IEEE International Conference on Tools with Artificial Intelligence (ICTAI'97), IEEE Computer Society, (November 1997)
S. Shum, V. Uren, G. Li, B. Sereno, and C. Mancini. International Journal of Intelligent Systems (Special Issue on Computational Models of Natural Argument), 22 (1):
17-47(2007)