1. Delayed neurotoxicity from continuous low-dose oral administration of leptophos to hens;Abou-Donia;Toxicology and Applied Pharmacology,1976
2. Ahlgren, I., 1973. Limnologiska studier av Sjoen Norrviken. III. Avlastningens effekter. Scripta Limnologica Upsaliencia No. 333.
3. Hierarchy: Perspectives for Ecological Complexity;Allen,1982
4. A multispecies extension to the Beverton and Holt theory of fishing, with account of phosphorus circulation and primary production;Andersen;Meddr. Danm. Fisk. - og Havunders. N.S.,1977
5. The eutrophication of lakes. Towards Global Equilibrium;Anderson,1973