@article{GDZPPN001261967, title = {On the structure of (m,n)-commutative semigroups.}, journal = {Semigroup forum}, volume = {44}, year = {1992}, pages = {183-190}, zbl = {0789.20070}, url = {http://dml.mathdoc.fr/item/GDZPPN001261967} }
Nagy, A. On the structure of (m,n)-commutative semigroups.. Semigroup forum, Tome 44 (1992) pp. 183-190. http://gdmltest.u-ga.fr/item/GDZPPN001261967/