@book{18218,
	author = {Aikawa, Hiroaki and Essen, Matts and Essen, Matts ; jt. auth.},
	title = {Potential theory; selected topics},
	publisher = {Springer-Verlag},
	year = {1996},
	series = {Lecture notes in Mathematics},
	address = {Berlin},
	note = {"Purchased under NBHM grant for the year 1998-99"}
}