@article{00962252,
title = {Permutability of tolerances with factor and decomposing congruences.},
journal = {Acta Mathematica Universitatis Comenianae. New Series},
volume = {65},
year = {1996},
pages = {93-99},
zbl = {0861.08007},
language = {en},
url = {http://dml.mathdoc.fr/item/00962252}
}
Chajda, I. Permutability of tolerances with factor and decomposing congruences.. Acta Mathematica Universitatis Comenianae. New Series, Tome 65 (1996) pp. 93-99. http://gdmltest.u-ga.fr/item/00962252/