| Filename: | Logic Programming And Nonmonotonic Reasoning: 4th International Conference, LPNMR '97 Dagstuhl Castle, Germany, July 28â31, 1997 Proceedings by Joxan Jaffar Bing Liu Roland H. C. Yap (auth.) Jürgen Dix Ulrich Furbach Anil Nerode (eds.).pdf |