@book{10099,
	author = {Nagata, Masayoshi},
	title = {On flat extensions of a ring},
	publisher = {Les Presses de L'Universite de Montreal,},
	year = {1971},
	series = {University of Montreal, Seminaire de Mathematiques superieures, ETE, 1970, v. 46},
	address = {Montreal:}
}