Partial Differential Equations: Second Edition,Amazon.com: Partial Differential Equations (The Graduate Studies in Mathematics, 19): 9781470469429: Lawrence C. Evans: Books,Partial Differential Equations (The Graduate Studies in Mathematics, 19),Partial Differential Equations (Graduate Studies in Mathematics): Evans, Lawrence C.: 9780821849743: Amazon.com: Books,Partial Differential Equations | SpringerLink