@book{103732,
	author = {International Conference on Potential Theory and Kr�al, Josef, and ebrary, Inc.},
	title = {Potential theory},
	publisher = {Walter de Gruyter,},
	year = {1996.},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10588331}
}