@book{51038,
	author = { Agmon, Shmuel and National Science Foundation (U.S.)},
	title = {Lectures on elliptic boundary value problems /},
	publisher = {Van Nostrand,},
	year = {1965},
	series = {Van Nostrand mathematical studies ;},
	address = {Princeton, N.J. :},
	note = {"Sponsored by the National Science Foundation."}
}