@book{21853,
	author = { Willmore, T.  and Barcellos, Anthony.},
	title = { An Introduction to Differential Geometry},
	publisher = { Dover Publications, |},
	year = {2012},
	address = { Mineola, N.Y. },
	edition = { Dover ed.},
	note = {This Dover ed. is an unabridged republication of the 1964 corrected printing of the work originally published in 1959 by Oxford University Press, Oxford.}
}