Head-Elementary-Set-Free Logic Programs.

Martin Gebser Joohyung Lee Yuliya Lierler Head-Elementary-Set-Free Logic Programs. 149-161 2007 conf/lpnmr/2007 LPNMR http://dx.doi.org/10.1007/978-3-540-72200-7_14 db/conf/lpnmr/lpnmr2007.html#GebserLL07