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@article{ARM_1974__10_3_a3, author = {Tran Duc Mai}, title = {Partitions and congruences in algebras. {III.} {Commutativity} of congruences}, journal = {Archivum mathematicum}, pages = {173--187}, publisher = {mathdoc}, volume = {10}, number = {3}, year = {1974}, mrnumber = {0417022}, zbl = {0326.08003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1974__10_3_a3/} }
Tran Duc Mai. Partitions and congruences in algebras. III. Commutativity of congruences. Archivum mathematicum, Tome 10 (1974) no. 3, pp. 173-187. http://geodesic.mathdoc.fr/item/ARM_1974__10_3_a3/