@article{102413,
author = {Ivan Chajda},
title = {On the existence of non-trivial tolerances in permutable algebras},
journal = {Czechoslovak Mathematical Journal},
volume = {40},
year = {1990},
pages = {598-600},
zbl = {0742.08002},
mrnumber = {1084895},
language = {en},
url = {http://dml.mathdoc.fr/item/102413}
}
Chajda, Ivan. On the existence of non-trivial tolerances in permutable algebras. Czechoslovak Mathematical Journal, Tome 40 (1990) pp. 598-600. http://gdmltest.u-ga.fr/item/102413/
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