@book{21162,
	author = {Strang,Gilbert},
	title = {An analysis of the finite element method},
	publisher = {Prentice -Hall},
	year = {1973},
	series = {Prentice -Hall series in automatic computation/ edited by George Forsythe},
	address = {Englewood cliffs, N.J.},
	note = {Include index}
}