@article{GDZPPN001251651, title = {A note on Baer monoids.}, journal = {Semigroup forum}, volume = {12}, year = {1976}, pages = {143-148}, zbl = {0354.20042}, url = {http://dml.mathdoc.fr/item/GDZPPN001251651} }
Knauer, U. A note on Baer monoids.. Semigroup forum, Tome 12 (1976) pp. 143-148. http://gdmltest.u-ga.fr/item/GDZPPN001251651/