Szukana fraza: [Opis = "W\: V. Alagar, S. Bergler, and F.Q. Dong, editors, Incompleteness and Uncertainty in Information Systems, Proceedings of SOFTEKS Workshop on Incompleteness and Uncertainty in Information Systems, Concordia University, Montreal, Canada, 1993, pages 34\-42. Workshops in Computing, Springer\-Verlag and British Computer Society, London, Berlin, 1994"]