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@article{SF_1994__49_2_135346, author = {S. Zhang and C.A. Vachuska}, title = {Varieties of completely regular semigroups generated by {Mal'cev} products.}, journal = {Semigroup forum}, pages = {175--194}, publisher = {mathdoc}, volume = {49}, number = {2}, year = {1994}, zbl = {0808.20050}, url = {http://geodesic.mathdoc.fr/item/SF_1994__49_2_135346/} }
S. Zhang; C.A. Vachuska. Varieties of completely regular semigroups generated by Mal'cev products.. Semigroup forum, Tome 49 (1994) no. 2, pp. 175-194. http://geodesic.mathdoc.fr/item/SF_1994__49_2_135346/