@article{1102968027, author = {Tangeman, R. L.}, title = {Strong heredity in radical classes.}, journal = {Pacific J. Math.}, volume = {43}, number = {3}, year = {1972}, pages = { 259-265}, language = {en}, url = {http://dml.mathdoc.fr/item/1102968027} }
Tangeman, R. L. Strong heredity in radical classes.. Pacific J. Math., Tome 43 (1972) no. 3, pp. 259-265. http://gdmltest.u-ga.fr/item/1102968027/