| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Emperors and Popes, Kings and Bishops: Scandinavian History in the Dark Ages | 978-0-9517339-3-6 (0-9517339-3-1) | 1993 |
| Prehistoric boats and ships of northwestern Europe: Some reflections | 978-91-40-04886-8 (91-40-04886-1) | 1984 |