@article {3814,
	title = {Paraclausastrea, un nouveau genre de madr{\'e}poraire de I{\textquoteright}Aptien de la Bulgarie du Nord [Paraclausastrea, a new madreporian genus from the Aptien of northern Bulgaria]},
	journal = {Spisanie na Bulgarskoto Geologichesko Druzhestvo},
	volume = {29},
	year = {1968},
	month = {1968///},
	pages = {159 - 171},
	author = {Zlatarski, Vassil N}
}
@article {3815,
	title = {Diplocteniopsidae, une nouvelle famille de Madreporaria de l{\textquoteright}Aptien de la Bulgarie du Nord [Diplocteniopsidae, a new madreporian family from the Aptien of northern Bulgaria]},
	journal = {Bulletin of the Geological Institute, Series Paleontology, Bulgarian Academy of Sciences},
	volume = {17},
	year = {1968},
	month = {1968///},
	pages = {49 - 107},
	author = {Zlatarski, Vassil N}
}
@book {3816,
	title = {Paleobiologichni Izsledvaniya Vrkhu Madrepori ot Urgona v Sredniya Predbalkan [Paleobiological Aspects of Madreporian Corals from the Urgonian in the Middle Predbalkan]},
	year = {1968},
	month = {1968///},
	pages = {28 - 28},
	publisher = {Blgarska Akademiya na naukite Geologicheski Institut},
	organization = {Blgarska Akademiya na naukite Geologicheski Institut},
	address = {Sofia},
	author = {Zlatarski, Vassil N}
}
