@article{GDZPPN001257951, title = {The monomorphism semigroup of S(X).}, journal = {Semigroup forum}, volume = {33}, year = {1986}, pages = {1-14}, zbl = {0581.20064}, url = {http://dml.mathdoc.fr/item/GDZPPN001257951} }
Magill, K.D. jr. The monomorphism semigroup of S(X).. Semigroup forum, Tome 33 (1986) pp. 1-14. http://gdmltest.u-ga.fr/item/GDZPPN001257951/