“…Since the elements a and at are conjugate in B l 〈 a 〉 (see, e.g., [8]), we conclude that the subgroups K g = 〈 〉 at a g , , g ∈ F H \ 1 , are finite [condition (ii) and Lemma 1], K g has the form K g = D g l Z, where Z is an elementary Abelian p-group of order p 2 , and at ∈ Z. According to Lemma 1, cyclic subgroups of the form 〈 ah 〉, h ∈ S, are handles of an Mp-group H , and, therefore, a subgroup of the form F ar l 〈 〉, r ∈ S , is also a Frobenius group with noninvariant factor 〈 〉 ar .…”