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- [8] GROUPS IN WHICH EVERY SUBGROUP IS ALMOST SUBNORMAL JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 1977, 15 (APR): : 221 - 231
- [10] Groups in which all Subgroups are Subnormal-by-Finite ADVANCES IN GROUP THEORY AND APPLICATIONS, 2016, 1 : 33 - 45