@book{109877,
	author = {International Conference on Potential Theory and Kishi, Masanori, and ebrary, Inc.},
	title = {Potential theory},
	publisher = {W. de Gruyter,},
	year = {1991.},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10599327}
}