@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/