1. Adams, W.M. and Hollis, G.E. (1989) Hydrology and Sustainable Resource Development of a Sahelian Floodplain Wetland. Report to the Hadeji-Nguru Wetlands Conservation Project.
2. LEEC Gatekeeper Series GK;B. Aylward,1991
3. LEEC Gatekeeper Series GK;E.B. Barbier,1989
4. LEEC Discussion Paper;E.B. Barbier,1990
5. LEEC Gatekeeper Series GK;E.B. Barbier,1991