1. Adamsson, M., Dave, G., 1996. Toxicity of human urine, its main nitrogen excretory and degradation products to Daphnia magna. In: Staudenmann, J., Schönborn, A., Etnier, C. (Eds. Transtee Publications Ltd, Zurich–uetiken Switzerland), Recycling the Resource, Vol. 5–6. Environmental Research Forum, Transtec Publ., pp. 137–144.
2. Toxicity identification evaluation of ammonia, nitrite and heavy metals at the Stensund Wastewater Aquaculture Plant, Sweden;Adamsson;Water Sci. Tech.,1998
3. Altman, P.L., Dittmer, D.S., 1974. Biological Handbooks. Biology Data Book, 2nd ed., Vol. III. Federation of American Science for Experimental Biology, Bethesda, MD.
4. Free ammonia inhibition of algal photosynthesis in intensive cultures;Azov;Appl. Environ. Microbiol.,1982
5. Dahllöf, Å., 1995. Potential för odling av alger i urin. (Potential use for algal growth in urine). Honor thesis. University of Göteborg, Dept. of Applied Environmental Science. In Swedish, 18 pp.