Gustafson, Karl E. Introduction to partial differential equations and Hilbert space methods / Partial differential equations and Hilbert space methods. Karl E. Gustafson. - Second edition - xix, 409 pages : illustrations ; 22 cm Includes bibliographical references and index. ISBN: 0486612716 0471832278 LCCN: 86026630 Subjects--Topical Terms: Differential equations, PartialHilbert space LC Class. No.: QA374 / .G878 1987