@book{19687,
	author = {Albeverio, S. and Kurasov, P. and Kurasov, P. ; jt. auth.},
	title = {Singular perturbations of differential operators; solvable Schrodinger type operators},
	publisher = {Cambridge University Press},
	year = {1999},
	series = {London Mathematical Society lecture note series},
	address = {Cambridge},
	note = {"Purchased under NBHM grant for the year 1999-2000"}
}