Data Analysis and Processing of Biomonitoring Data in the Arrow Project for the Evaluation of Ecological State of Surface Waters in the Czech Republic According to WFD EU. - Jirí Jarkovský; Klára Kubosová; Radim Klapka; Vratislav Kubik; Jaroslav Rácek; Jan Hodovský; Miroslav Petras (EnviroInfo (1), 2007)