TY  - JOUR
AU  - Kovacs, Amos
TI  - On Derivations in Prime Rings and a Question of Herstein
JO  - Canadian mathematical bulletin
PY  - 1979
SP  - 339
EP  - 344
VL  - 22
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-042-0/
DO  - 10.4153/CMB-1979-042-0
ID  - 10_4153_CMB_1979_042_0
ER  -