کتاب های B. Stellmacher
A characteristic subgroup of Sigma4-free groups
Stellmacher B., 1993
The Local Structure for Finite Groups with a Large hBSubgroup
U. Meierfrankenfeld, B. Stellmacher, G. Stroth, 2016
Rank 3 Amalgams
B. Stellmacher, Franz Georg Timmesfeld, 1998
