1. Standard Methods for the Examination of Water and Wastewater;American Public Health Association (APHA), American Water Works Association (AWWA), and Water Pollution Control Federation (WPCF),1992
2. Harmful algal blooms and eutrophication: nutrient sources, composition, and consequences;Anderson;Estuaries,2002
3. Bacterial iron homeostasis;Andrews;FEMS Microbiol. Rev.,2003
4. Cyanobacteria metal interactions: requirements, toxicity, and ecological implications;Baptista;Crit. Rev. Microbiol.,2006
5. Basson, M.S., Van Niekerk P.H., Van Rooyen J.N., 1997. Overview of water resources availability and utilization in South Africa. Report no. P RSA/00/0197, Department of Water Affairs and Forestry and BKS (Pty.) Ltd., Pretoria, South Africa.