| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Essays in Pragmatic Philosophy | 978-82-00-07293-5 (82-00-07293-2) | 1986 | Helge Hoibraaten |
| In Skeptical Wonder: Inquiries into the Philosophy of Arne Naess on the Occasion of His 70th Birthday | 978-82-00-05867-0 (82-00-05867-0) | 1982 | |