Nicola Leone, Pasquale Rullo. Ordered Logic Programming with Sets. Journal of Logic and Computation, 3(6):621-642, 1993.
@article{LeoneR93:1, title = {Ordered Logic Programming with Sets}, author = {Nicola Leone and Pasquale Rullo}, year = {1993}, tags = {logic programming, programming, logic}, researchr = {https://researchr.org/publication/LeoneR93%3A1}, cites = {0}, citedby = {0}, journal = {Journal of Logic and Computation}, volume = {3}, number = {6}, pages = {621-642}, }