1995 - Nonlinear Variational Problems and Partial Differential Equations (Hardcover) ISBN-13: 9780582234369 ISBN-10: 0582234360 Genre: Science & Math ? 1992 - Nonlinear Hyperbolic Equations and Field Theory [Research Notes in Mathematics Series] (Hardcover) ISBN-13: 9780582087668 ISBN-10: 058208766X ? |