@article {7474,
	title = {Novye dannye o morfologii nekotorykh ordovikskikh molluskov Kazakhstana},
	journal = {Voprosy Paleontologii},
	volume = {11},
	year = {1999},
	note = {xeroxPls. 1-2[In Russian]},
	pages = {50-56},
	keywords = {anderkenia, bivalvia, cyrtodonta, mollusca, ordovician, Pterineidae, pterioidea, shell morphology, taxonomy},
	author = {Sinitsyna, I. N.}
}
@article {1568,
	title = {Novye dannye o morfologii nekotorykh ordovikskikh molluskov Kazakhstana},
	journal = {Voprosy Paleontologii},
	volume = {11},
	year = {1999},
	pages = {50-56},
	keywords = {bivalvia, cyrtodonta, mollusca, ordovician, Pterineidae, pterioidea, shell morphology},
	author = {Sinitsyna, I. N.}
}
