	Authors	Year	Title
	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.
	Sobolev	1914a	Nabroski po filogenii goniatitov. Izv. Varsh. politekhn. inst., 1 za 1914g.: 1-191, pl.3;