Authors	Year	Title
Makowski	1962	Problem of sexual dimorphism in ammonites. Palaeontologia Polonica, 12: I-V, 1-92, fig.1-14, tab.1-12, pl.1-20; Warzawa.
Makowski	1971	Some remarks on the ontogenetic development and sexual dimorphism in the Ammonoidea. acta geologica polonica, 21 (3): 321-340, 1 pl., Warszawa.
Makowski	1991	Dimorphism and evolution of the goniatite Tornoceras in the Famennian of the Holy Cross Mountains. Acta Palaeontologica Polonica, 36 (3): 241-254, 9 fig., Warszawa.