| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Elliptic Differential Equations and Obstacle Problems | Paperback | 978-1-4899-3616-5 (1-4899-3616-5) | 2013 |
| Elliptic Differential Equations and Obstacle Problems | Hardcover | 978-0-306-42448-9 (0-306-42448-7) | 1987 |