@book{7168,
	author = {Soós, Gy. and Bolyai János Matematikai Társulat. and Colloquium on Differential Geometry},
	title = {Differential geometry /},
	publisher = {North-Holland Pub. Co. :},
	year = {c1982.},
	address = {Amsterdam ;},
	note = {Papers presented at a Colloquium on Differential Geometry, Budapest, Sept. 3-7, 1979, which was organized by the János Bolyai Mathematical Society.}
}