References
- Botterweg, J. & Helmer, W., 1991: ‘Future for a gravel river’ Part 7. Possibilities and risks for the biotic community. — RIZA-report 91.019 — (in Dutch).
- Botterweg, J. & Silva, W., 1992: Project Ecological Rehabilitation of the Meuse. — Reports of the project ‘Ecological Rehabilitation of the River Meuse’ 1 (in Dutch, abstract in English and French).