@article{102478, author = {S\'andor Radelecki}, title = {Compatible tolerances on groupoids}, journal = {Czechoslovak Mathematical Journal}, volume = {41}, year = {1991}, pages = {436-445}, zbl = {0768.20027}, mrnumber = {1117797}, language = {en}, url = {http://dml.mathdoc.fr/item/102478} }
Radelecki, Sándor. Compatible tolerances on groupoids. Czechoslovak Mathematical Journal, Tome 41 (1991) pp. 436-445. http://gdmltest.u-ga.fr/item/102478/
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