Hislop, P. D. and Sigal, I. M. Introduction to spectral theory; with applications to schrodinger operators - New York Springer-Verlag 1996 - ix, 337p. - Applied Mathematical Sciences v. 13 . "Purchased under NBHM grant for the year 1998-99" ISBN: 0387945016 Dewey Class. No.: 515.72 / H673.IS