Renardy, Michael. An introduction to partial differential equations / Michael Renardy, Robert C. Rogers. - New York : Springer-Verlag, c1993. - xiii, 428 p. : ill. ; 25 cm. - Texts in applied mathematics ; 13. . Includes index. Includes bibliographical references. ISBN: 0387979522 (hbk.) Subjects--Topical Terms: Differential equations, Partial.