@article{bwmeta1.element.bwnjournal-article-fmv67i1p16bwm,
author = {G. Wenzel},
title = {Extensions of congruence relations on infinitary partial algebras. A problem of G. Gr\"atzer},
journal = {Fundamenta Mathematicae},
volume = {68},
year = {1970},
pages = {163-169},
zbl = {0201.02002},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv67i1p16bwm}
}
Wenzel, G. Extensions of congruence relations on infinitary partial algebras. A problem of G. Grätzer. Fundamenta Mathematicae, Tome 68 (1970) pp. 163-169. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv67i1p16bwm/