@book{13297,
	author = {Wangerin, A.},
	title = {Theorie des Potentials und der Kugelfunktionen /},
	publisher = {W. de Gruyter,},
	year = {1921.},
	series = {Sammlung Schubert ;},
	address = {Berlin :},
	edition = {Unveränderter Neudruck.}
}