Isabel F. Cruz, Alberto O. Mendelzon, Peter T. Wood. A Graphical Query Language Supporting Recursion. In Umeshwar Dayal, Irving L. Traiger, editors, Proceedings of the Association for Computing Machinery Special Interest Group on Management of Data 1987 Annual Conference, San Francisco, California, May 27-29, 1987. pages 323-330, ACM Press, 1987. [doi]
Abstract is missing.