@inbook {1521,
	title = {Rod Pteroperna Morris et Lycett, 1850},
	booktitle = {Novye vidy drevnikh rastenij i bespozvonochnykh SSSR},
	volume = {3},
	year = {1972},
	pages = {119-120},
	publisher = {Nedra},
	organization = {Nedra},
	address = {Moskva},
	keywords = {bivalvia, mollusca, paleontology, pteriidae, pterioida, pterioidea, pteroperna, taxonomy},
	author = {Repman, Ye. A.}
}
