Vincenzo Manca, Antonino Salibra. Soundness and Completeness of the Birkhoff Equational Calculus for Many-Sorted Algebras with Possibly Empty Carrier Sets. Theoretical Computer Science, 94(1):101-124, 1992.
@article{MancaS92,
title = {Soundness and Completeness of the Birkhoff Equational Calculus for Many-Sorted Algebras with Possibly Empty Carrier Sets},
author = {Vincenzo Manca and Antonino Salibra},
year = {1992},
tags = {completeness, algebra},
researchr = {https://researchr.org/publication/MancaS92},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {94},
number = {1},
pages = {101-124},
}