@article{106945,
author = {Katarzyna Ha\l kowska},
title = {On some operator defined on equational classes of algebras},
journal = {Archivum Mathematicum},
volume = {012},
year = {1976},
pages = {209-212},
zbl = {0352.08003},
mrnumber = {0432510},
language = {en},
url = {http://dml.mathdoc.fr/item/106945}
}
Hałkowska, Katarzyna. On some operator defined on equational classes of algebras. Archivum Mathematicum, Tome 012 (1976) pp. 209-212. http://gdmltest.u-ga.fr/item/106945/
Universal Algebra, D. Van Nostrand Company, 1968. (1968) | MR 0248066
On the subdirect Product of some Equational classes of Algebras, Matematische Nachrichten, 1974, pp. 1-3. (1974)