Distributively generated near-rings with descending chain condition.
Formations and -closure in finite groups
Closure Properties for Fitting Functors.
Über Fittingklassen und die Lockett-Vermutung.
On non-supersoluble and non-polycyclic normal subgroups
Conjugate -normally embedded fitting functors
A note on supersoluble maximal subgroup and theta-pairs.
A θ-pair for a maximal subgroup M of a group G is a pair (A, B) of subgroups such that B is a maximal G-invariant subgroup of A with B but not A contained in M. θ-pairs are considered here in some groups having supersoluble maximal subgroups.
On the structure of the normal subgroups of a group : supersolubility
Mutually permutable products of two nilpotent groups
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