Hislop, P.D. Introduction to spectral theory : With applications to schrodinger operators / by P.D. Hislop and I.M. Sigal - New York: Springer Verlag, 1996. - ix, 337p. - Applied mathematical sciences ; 113 . ISBN: 0387945016 Subjects--Topical Terms: GeometryKato inequalityLinear operatorsMath Dewey Class. No.: 515.7223 / HIS/I