Tomasz Imielinski, Witold Lipski Jr.. On th Undecidability of Equivalence Problems for Relational Expressions. In Advances in Data Base Theory. pages 393-409, 1982.
@inproceedings{ImielinskiL82,
title = {On th Undecidability of Equivalence Problems for Relational Expressions},
author = {Tomasz Imielinski and Witold Lipski Jr.},
year = {1982},
researchr = {https://researchr.org/publication/ImielinskiL82},
cites = {0},
citedby = {0},
pages = {393-409},
booktitle = {Advances in Data Base Theory},
}