	Authors	Year	Title
	Zakharov	1984	Ontogenez permskikh Pronoritidae i Medlicottiidae i problema proiskhozhdeniya tseratitov. In: Sistematika i evolyutsiya bespozvonochnykh Dal'nego Vostoka; DVNTs AN SSSR, 1984: 23-40, fig.1-4, pl.2-8; Vladivostok.