@article{GDZPPN001253301,
title = {The factorizable transformation semigroups.},
journal = {Semigroup forum},
volume = {18},
year = {1979},
pages = {15-20},
zbl = {0416.20054},
url = {http://dml.mathdoc.fr/item/GDZPPN001253301}
}
Tirasupa, Y. The factorizable transformation semigroups.. Semigroup forum, Tome 18 (1979) pp. 15-20. http://gdmltest.u-ga.fr/item/GDZPPN001253301/