@article{GDZPPN001250116, title = {On the existence of special homogeneous monoids.}, journal = {Semigroup forum}, volume = {7}, year = {1974}, pages = {95-101}, zbl = {0303.20050}, url = {http://dml.mathdoc.fr/item/GDZPPN001250116} }
Adámek, J.; Koubek, V.; Reiterman, J. On the existence of special homogeneous monoids.. Semigroup forum, Tome 7 (1974) pp. 95-101. http://gdmltest.u-ga.fr/item/GDZPPN001250116/