@article{GDZPPN001250086, title = {The generalized translational hull of a semigroup.}, journal = {Semigroup forum}, volume = {7}, year = {1974}, pages = {76-83}, zbl = {0291.20076}, url = {http://dml.mathdoc.fr/item/GDZPPN001250086} }
Luedeman, J.K. The generalized translational hull of a semigroup.. Semigroup forum, Tome 7 (1974) pp. 76-83. http://gdmltest.u-ga.fr/item/GDZPPN001250086/