@article{GDZPPN00202991X, title = {An equational approach to products of relatively regular operators.}, journal = {Aequationes mathematicae}, volume = {15}, year = {1977}, pages = {55-62}, zbl = {0348.47010}, url = {http://dml.mathdoc.fr/item/GDZPPN00202991X} }
Caradus, S.R. An equational approach to products of relatively regular operators.. Aequationes mathematicae, Tome 15 (1977) pp. 55-62. http://gdmltest.u-ga.fr/item/GDZPPN00202991X/