@book{16972,
	author = {Symposium on Schrodinger Operators, Instt. of Mathematics, Aarhus Univ., Oct. 2-4, 1985 and Balslev, E. ; ed.},
	title = {Schrodinger operators; papers},
	publisher = {Springer-Verlag},
	year = {1986},
	address = {Berlin}
}