Klátyik Szandra; Földi Angéla; Ács Éva; Cséffán Tamás; Pasaréti Gyula; Mörtl Mária; Takács Eszter; Bohus Péter; Székács András; Darvas Béla: Reaction of biofilms (cyanobacterial, diatom and green algae) from lake Balaton and river Danube to herbicide preparation ROUNDUP and its components (glyphosate, POEA).