| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Control theory of systems governed by partial differential equations | 978-0-12-068640-7 (0-12-068640-6) | 1977 |
| The mathematical foundations of the finite element method with applications to partial differential equations;: | 978-0-12-068650-6 (0-12-068650-3) | 1972 |