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HELEŠIC, Jan. Biological Monitoring of Running Waters in Eastern and Central Europaen Countries (Former Communistic Block). In G. Ziglio, M. Siligardi, G. Flaim: Biological Monitoring of Rivers. Application and Perspectives. 1. vyd. Chichestr, England, GB: John Wiley and Sons Ltd., 2006, s. 327-350. Water Quality Measurements Series. ISBN 0-470-86376-5.Podrobněji: https://is.muni.cz/publication/624124/cs