@article{GDZPPN001252992,
title = {Generalized Commutative semigroups.},
journal = {Semigroup forum},
volume = {18},
year = {1979},
pages = {65-74},
zbl = {0396.20041},
url = {http://dml.mathdoc.fr/item/GDZPPN001252992}
}
Mannepalli, V.L.; Nagore, C.S.H. Generalized Commutative semigroups.. Semigroup forum, Tome 18 (1979) pp. 65-74. http://gdmltest.u-ga.fr/item/GDZPPN001252992/