| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Flight Identification of European Seabirds | 978-0-7136-8616-6 (0-7136-8616-2) | 2007 | Anders Blomdahl · Niklas Holmstrom |
| Flight Identification of European Seabirds | 978-0-7136-6020-3 (0-7136-6020-1) | 2003 | Niklas Holmstrom · Anders Blomdahl · et al |