@article{SF_1972__4_133909, author = {M.P. Dorofeeva}, title = {Hereditary and semi-hereditary monoids.}, journal = {Semigroup forum}, pages = {301--311}, publisher = {mathdoc}, volume = {4}, year = {1972}, zbl = {0259.20059}, url = {http://geodesic.mathdoc.fr/item/SF_1972__4_133909/} }