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@article{SF_1990__41_2_135060, author = {N. Kehayopulu and Kiriakuli P. and S. Hanumantha Rao and P. Lakshmi}, title = {On weakly commutative poe-semigroups.}, journal = {Semigroup forum}, pages = {373--376}, publisher = {mathdoc}, volume = {41}, number = {2}, year = {1990}, zbl = {0708.06011}, url = {http://geodesic.mathdoc.fr/item/SF_1990__41_2_135060/} }
N. Kehayopulu; Kiriakuli P.; S. Hanumantha Rao; P. Lakshmi. On weakly commutative poe-semigroups.. Semigroup forum, Tome 41 (1990) no. 2, pp. 373-376. http://geodesic.mathdoc.fr/item/SF_1990__41_2_135060/