Oliver Ray. The Need for Ancestor Resolution When Answering Queries in Horn Clause Logic. In Maurizio Gabbrielli, Gopal Gupta, editors, Logic Programming, 21st International Conference, ICLP 2005, Sitges, Spain, October 2-5, 2005, Proceedings. Volume 3668 of Lecture Notes in Computer Science, pages 410-411, Springer, 2005. [doi]
Abstract is missing.