John V. Carlis. HAS, a Relational Algebra Operator or Divide is not Enough to Conquer. In Proceedings of the Second International Conference on Data Engineering, February 5-7, 1986, Los Angeles, California, USA. pages 254-261, IEEE Computer Society, 1986. [doi]
@inproceedings{Carlis86,
title = {HAS, a Relational Algebra Operator or Divide is not Enough to Conquer},
author = {John V. Carlis},
year = {1986},
tags = {relational algebra, algebra},
researchr = {https://researchr.org/publication/Carlis86},
cites = {0},
citedby = {0},
pages = {254-261},
booktitle = {Proceedings of the Second International Conference on Data Engineering, February 5-7, 1986, Los Angeles, California, USA},
publisher = {IEEE Computer Society},
isbn = {0-8186-0655-X},
}