@article{GDZPPN001249002, title = {Endomorphism monoids of acts over monoids.}, journal = {Semigroup forum}, volume = {7}, year = {1974}, pages = {50-58}, zbl = {0258.20059}, url = {http://dml.mathdoc.fr/item/GDZPPN001249002} }
Mikhalev, A.V.; Knauer, U. Endomorphism monoids of acts over monoids.. Semigroup forum, Tome 7 (1974) pp. 50-58. http://gdmltest.u-ga.fr/item/GDZPPN001249002/