Internal nutrient loading may increase microcystin concentrations in freshwater lakes by promoting growth of Microcystis populationsDiane M. Orihel, Ora Hadas, Riki Pinkas, Yehudit Viner-Mozzini and Assaf SukenikAnn. Limnol. - Int. J. Lim., 49 3 (2013) 225-235DOI: https://doi.org/10.1051/limn/2013052