@article{GDZPPN002550342, title = {The structure of hemigroups.}, journal = {Aequationes mathematicae}, volume = {20}, year = {1980}, pages = {129-141}, zbl = {0459.22003}, url = {http://dml.mathdoc.fr/item/GDZPPN002550342} }
Chinda, K.P.; Day, Jane M. The structure of hemigroups.. Aequationes mathematicae, Tome 20 (1980) pp. 129-141. http://gdmltest.u-ga.fr/item/GDZPPN002550342/