REFERENCES
- Bell , H. E. , Martindale , W. S. ( 1987 ). Centralizing mappings of semiprime rings . Canad. Math. Bull 30 : 92 – 101 .
- Curran , M. J. , McCaughan , D. J. ( 2001 ). Central automorphisms that are almost inner . Comm. Algebra 29 ( 5 ): 2081 – 2087 .
- Deaconescu , M. , Silberberg , Gh. ( 2001 ). Right 2-Engel elements and commuting automorphism of group . J. Algebra 238 : 479 – 484 .
- Deaconescu , M. , Silberberg , Gh. , Walls , G. ( 2002 ). On commuting automorphisms of groups . Arch. Math 79 : 423 – 429 .
- Divinsky , N. ( 1955 ). On commuting automorphisms of rings . Trans. Roy. Soc. Canada. III 49 : 19 – 22 .
- Gorenstein , D. ( 1968 ). Finite Groups . New York : Harper & Row Publisher .
- Herstein , I. N. ( 1984 ). Problem proposal . Amer. Math. Monthly 91 : 203 .
- Laffey , T. J. ( 1986 ). Solution of problem E3039 . Amer. Math. Monthly 93 : 816 .
- Luh , J. ( 1970 ). A note on commuting automorphisms of rings . Amer. Math. Monthly 77 : 61 – 62 .
- Malone , J. J. ( 1984 ). p-groups with non abelian automorphism groups and all automorphisms central . Bull. Austral. Math. Soc. 29 : 35 – 37 .
- Robinson , D. J. S. ( 1982 ). A Course in the Theory of Groups . Berlin , Heidelberg, New York : Springer-Verlag .
- Schenkman , E. ( 1965 ). Group Theory . Princeton , N.J. : Van Nostrand .
- Communicated by S. Sehgal.