REFERENCES
- Al-Sheikahmad , A. ( 2004 ). Finite groups with given c-permutable subgroups . Algebra Discrete Math. 3 : 74 – 81 .
- Ballester-Bolinches , A. , Wang , Y. ( 2000 ). Finite groups with c-normal minimal subgroups . J. Pure and Applied Algebra 153 : 121 – 127 .
- Buckley , J. (1970). Finite groups whose minimal subgroups are normal. Math. Z. 116(1):15–17.
- Doerk , K. , Hawkes , T. ( 1992 ). Finite Soluble Groups . Berlin-New York : Walter de Gruyter .
- Gorenstein , D. ( 1968 ). Finite Groups . New York-London : Harper & Row .
- Guo , W. , Shum , K. P. , Skiba , A. ( 2003 ). G-covering subgroup systems for the classes of supersoluble and nilpotent groups . Israel J. Math. ( 138 ): 125 – 138 .
- Huppert , B. ( 1967 ). Endliche Gruppen I . Berlin–Heidelberg–New York : Springer .
- Huppert , B. , Blackburn , N. ( 1982 ). Finite Groups III . Berlin-New York : Springer-Verlag .
- Li , D. , Guo , X. ( 1998 ). The influence of c-normality of subgroups on the structure of finite groups II . Comm. Algebra 26 ( 6 ): 1913 – 1922 .
- Ramadan , M. ( 1992 ). Influence of normality on maximal subgroups of Sylow subgroups of a finite group . Acta Math. Hungar. 59 ( 1–2 ): 107 – 110 .
- Shemetkov , L. A. ( 1978 ). Formations of Finite Groups . Moscow : Nauka, Main Editorial Board for Physical and Mathematical Literature .
- Skiba , A. N. ( 2005a ). A note on c-normal subgroups of finite groups . Algebra and Discrete Math. 3 : 56 – 64 .
- Skiba , A. N. ( 2005b ). On weakly π-permutable subgroups of finite groups . Gomel, Dec. 2005, Preprints/GGU im. F. Skoriny .
- Srinivasan , S. ( 1980 ). Two sufficient conditions for supersolubility of finite groups . Israel J. Math. 3 ( 35 ): 210 – 214 .
- Wang , Y. ( 1995 ). c-Normality of groups and its properties . J. Algebra 180 ( 3 ): 954 – 965 .
- Wei , H. ( 2001 ). On c-normal maximal and minimal subgroups of Sylow subgroups of finite groups . Comm. Algebra 29 ( 5 ): 2193 – 2200 .
- Wei , H. , Wang , Y. , Li , Y. ( 2003 ). On c-Normal maximal and minimal subgroups of sylow subgroups of finite groups. II . Comm. Algebra 31 ( 10 ): 4807 – 4811 .
- Communicated by A. Yu. Olshanskii.