@article{GDZPPN001252305, title = {On factorisations onto the Bicyclic semigroup.}, journal = {Semigroup forum}, volume = {14}, year = {1977}, pages = {103-118}, zbl = {0396.20040}, url = {http://dml.mathdoc.fr/item/GDZPPN001252305} }
Demlová, M. On factorisations onto the Bicyclic semigroup.. Semigroup forum, Tome 14 (1977) pp. 103-118. http://gdmltest.u-ga.fr/item/GDZPPN001252305/