Thomas Vasak. Universal closure operator for prolog. SIGPLAN Notices, 21(6):61-62, 1986. [doi]
@article{Vasak86-0, title = {Universal closure operator for prolog}, author = {Thomas Vasak}, year = {1986}, doi = {10.1145/14937.14944}, url = {https://doi.org/10.1145/14937.14944}, researchr = {https://researchr.org/publication/Vasak86-0}, cites = {0}, citedby = {0}, journal = {SIGPLAN Notices}, volume = {21}, number = {6}, pages = {61-62}, }