@article{urn:eudml:doc:39929,
title = {On free products of bicyclic monoids.},
journal = {Collectanea Mathematica},
volume = {46},
year = {1995},
pages = {109-119},
zbl = {0851.20056},
mrnumber = {MR1366133},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39929}
}
Lallement, Gérard. On free products of bicyclic monoids.. Collectanea Mathematica, Tome 46 (1995) pp. 109-119. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39929/