1. Allan J.D. and Castillo M.M., 2007. Stream Ecology: Structure and Function of Running Waters, 2nd edn., Kluwer Academic Publishers, Boston, 436 p.
2. American Public Health Association (APHA), American Water Works Association (AWWA), Water Environment Federation (WEF), 2005. Standard Methods for the Examination of Water and Wastewater: Contennial Edition (Standard Methods for the Examination of Water and Wastewater), 21th edn., American Public Health Association, Washington, DC.