| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Dovrefjell--Ormtjernkampen | 978-82-531-4065-0 | 1975 | |
| Maps of Distribution of Norwegian Vascular Plants: Volume 2 Alpine Plants | 978-82-519-1058-3 | 1995 | Olav Gjaerevoll · Re Voll-Gjae |
| Norges planteliv: Fra Sørlandsskjærgård til Svalbardtundra | 978-82-518-1903-9 | 1984 | |
| Plantegeografi | 978-82-519-1104-7 | 1992 | |