@book{23051,
	author = {Kozlov, V. A. and Maz'ya, V. G.},
	title = {Elliptic boundary value problems in domains with point singularities},
	publisher = {American Mathematical Society,},
	year = {1997},
	series = {Mathematical surveys and monographs},
	address = {Providence:},
	note = {AMS Webpage}
}