@article{GDZPPN002305038, title = {Subgroups and Conjugates in Semi-Prime Rings.}, journal = {Mathematische Annalen}, volume = {193}, year = {1971}, pages = {313-327}, zbl = {0206.04403}, url = {http://dml.mathdoc.fr/item/GDZPPN002305038} }
LANSKI, Charles. Subgroups and Conjugates in Semi-Prime Rings.. Mathematische Annalen, Tome 193 (1971) pp. 313-327. http://gdmltest.u-ga.fr/item/GDZPPN002305038/