Iliopoulou-Georgudaki, J. Kantzaris, V. Katharios, P. Kaspiris, P. Georgiadis, Th. Montesantou, B., An application of different bioindicators for assessing water quality: A case study in the rivers Alfeios and Pineios (Peloponnisos, Greece), Ecological Indicators, (2), 345-360, 2003, Elsevier, 1470-160X