1. report R1310–10;de Rooij N.M.,1985
2. de Rooij, N.M. 1980.Hypertrophic ecosystems, Edited by: Barrica and Mur. 139Amsterdam: Junk Publishers.
3. Smits, J.G.C. and de Rooij, N.M. Papers International Symposium ‘Polders of the world’. Amsterdam. pp.688Wageningen, The Netherlands: ILRI.
4. Klomp, R. Proceedings 3rd Symposium Ecological Modeling. Colorado. pp.845Amsterdam: Elsevier Sci. Publ. Comp. others