On groups of order pn with automorphisms of order pn–2

On Subgroups and Epimorphic Images of Finite p-Groups

“…[Mi2,BM] Let G be a group of order 2 m , m > 5, and let A be a W -invariant abelian subgroup of type 2 2 in G such that G/A is neither dihedral nor generalized quaternion. Then G admits no automorphism of order 2 m−2 .…”

“…In Section 9 a quick classification of groups of order p m with automorphism of order p m−1 is obtained (see [Mi2,B0,BM]). Some results on groups of order p m with automorphisms of order p m−2 and p m−3 are also presented (see also [Mil2,BM].…”

“…Some results on groups of order p m with automorphisms of order p m−2 and p m−3 are also presented (see also [Mil2,BM]. )…”