@article{GDZPPN001261258, title = {Commutative semigroup cohomology.}, journal = {Semigroup forum}, volume = {43}, year = {1991}, pages = {247-252}, zbl = {0742.20067}, url = {http://dml.mathdoc.fr/item/GDZPPN001261258} }
Grillet, P.A. Commutative semigroup cohomology.. Semigroup forum, Tome 43 (1991) pp. 247-252. http://gdmltest.u-ga.fr/item/GDZPPN001261258/