@book{84952,
	author = {Sogge, Christopher D.},
	title = {Hangzhou lectures on eigenfunctions of the Laplacian /},
	publisher = {Princeton University Press,},
	year = {2014.},
	series = {Annals of Mathematics Studies ;},
	address = {Princeton, New Jersey ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10829680}
}