| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| In Search of Indicators of Sustainable Development | 978-0-7923-1249-9 (0-7923-1249-X) | 1991 | Harmen Verbruggen |
| Joint Implementation to Curb Climate Change: Legal and Economic Aspects | 978-0-7923-2825-4 (0-7923-2825-6) | 1994 | Paul Peters · Nico Schrijver |