| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Himalayan Biodiversity in the Changing World | 978-94-007-1801-2 (94-007-1801-2) | 2011 | |
| Trends and Fluctuations and Underlying Mechanisms in Terrestrial Orchid Populations | 978-90-5782-123-3 (90-5782-123-0) | 2002 | Jo H. Willems · Dennis F. Whigham |