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@article{PORMA_1977__36_1_115301, author = {Kazim, M.A. and Naseeruddin, Md.}, title = {On almost semigroups}, journal = {Portugaliae mathematica}, pages = {41--47}, publisher = {mathdoc}, volume = {36}, number = {1}, year = {1977}, mrnumber = {0535222}, zbl = {0498.20053}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1977__36_1_115301/} }
Kazim, M.A.; Naseeruddin, Md. On almost semigroups. Portugaliae mathematica, Tome 36 (1977) no. 1, pp. 41-47. http://geodesic.mathdoc.fr/item/PORMA_1977__36_1_115301/