@inbook {7053,
	title = {The very last moment of the Paleozoic era},
	booktitle = {The Permian and Triassic systems and their mutual boundary},
	year = {1973},
	note = {reprint},
	pages = {1-10},
	publisher = {Canadian Society of Petrolium Geologists},
	organization = {Canadian Society of Petrolium Geologists},
	address = {Calgary},
	keywords = {geology, permian, permo-triassic boundary, triassic},
	author = {Newell, Norman D.},
	editor = {Logan, A. and Hills, L. V.}
}
