Laursen, Kjeld B. An introduction to local spectral theory / - Oxford: Oxford University Press, 2000 - xii, 591p. Bibl. Index. - London Mathematical Society monographs new series 20 . "Purchased under NBHM grant for the year 2005-2006" ISBN: 0198523815 Dewey Class. No.: 515.72 / L387.IL