Minoru Ito, Tadao Kasami. Optimizing universal queries in relational databases. Systems and Computers in Japan, 22(3):19-30, 1991. [doi]
@article{ItoK91,
title = {Optimizing universal queries in relational databases},
author = {Minoru Ito and Tadao Kasami},
year = {1991},
doi = {10.1002/scj.4690220303},
url = {http://dx.doi.org/10.1002/scj.4690220303},
researchr = {https://researchr.org/publication/ItoK91},
cites = {0},
citedby = {0},
journal = {Systems and Computers in Japan},
volume = {22},
number = {3},
pages = {19-30},
}