Factor-splitting Abelian groups of arbitrary rank Ladislav Bican (1978) Commentationes Mathematicae Universitatis Carolinae
Factor-splitting Abelian groups of finite rank Ladislav Bican (1976) Commentationes Mathematicae Universitatis Carolinae
Factor-splitting length of torsionfree abelian groups of rank two Ladislav Bican (1983) Rendiconti del Seminario Matematico della Università di Padova
Finite Groups of Exponent 12 as Automorphism Groups. Kurt A. Hirsch, J. Terry Hallett (1977) Mathematische Zeitschrift