id: 05513174 dt: j an: 05513174 au: Blass, Andreas; Gurevich, Yuri ti: Two forms of one useful logic: Existential fixed point logic and liberal Datalog. so: Comput. Res. Repos. 2008, Article No. 0811.0977 (2008). py: 2008 pu: Association for Computing Machinery, New York, NY; Cornell University, Ithaka, NY la: EN cc: ut: ci: li: arXiv:0811.0977