Nicole Bidoit, Christine Froidevaux. Negation by Default and Unstratifiable Logic Programs. Theoretical Computer Science, 78(1):86-112, 1991.
@article{BidoitF91:0, title = {Negation by Default and Unstratifiable Logic Programs}, author = {Nicole Bidoit and Christine Froidevaux}, year = {1991}, tags = {logic programming, logic}, researchr = {https://researchr.org/publication/BidoitF91%3A0}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {78}, number = {1}, pages = {86-112}, }