Gayathri Namasivayam Miroslaw Truszczynski Simple Random Logic Programs. 223-235 2009 LPNMR http://dx.doi.org/10.1007/978-3-642-04238-6_20 conf/lpnmr/2009 db/conf/lpnmr/lpnmr2009.html#NamasivayamT09