Folland, Gerald B. Introduction to partial differential equations / by Gerald B.Folland. - 2nd ed / . - New Delhi : Prentice Hall of India , 2003. - vii,324p. : ill.,figs. ; 23cm . includes bibliographical references and index ISBN: 8120318854 Rs. 195.00 Subjects--Index Terms: DIFFERENTIAL EQUATION,PARTIAL Dewey Class. No.: 515.353 / FOL/I