@article{GDZPPN001261959, title = {Bilateral semidirect products of transformation semigroups.}, journal = {Semigroup forum}, volume = {44}, year = {1992}, pages = {166-182}, zbl = {0776.20020}, url = {http://dml.mathdoc.fr/item/GDZPPN001261959} }
Kunze, M. Bilateral semidirect products of transformation semigroups.. Semigroup forum, Tome 44 (1992) pp. 166-182. http://gdmltest.u-ga.fr/item/GDZPPN001261959/