@book{70207,
	author = {Schouten, J. A.},
	title = {Ricci-calculus :},
	publisher = {Springer,},
	year = {c1954.},
	series = {Die Grundlehren der mathematischen Wissenschaften in Einzeldarstellungen,},
	address = {New York :},
	edition = {2nd ed.}
}