Spatial and temporal variation in microcystin concentrations during perennial bloom of Planktothrix agardhii in a hypertrophic lakeB. Pawlik-Skowrońska, J. Pirszel and R. KornijówAnn. Limnol. - Int. J. Lim., 44 2 (2008) 145-150DOI: https://doi.org/10.1051/limn:2008015