Kurmayer R, Christiansen G, Fastner J & Börner T (2004) Abundance of active and inactive microcystin genotypes in populations of the toxic cyanobacterium Planktothrix spp. Environmental Microbiology 6: 831-841. DOI: 10.1111/j.1462-2920.2004.00626.x
Suda S, Watanabe MM, Otsuka S, Mahakahant A, Yongmanitchai W, Nopartnaraporn N, Liu YD & Day JG (2002) Taxonomic revision of water-bloom-forming species of oscillatorioid cyanobacteria. International Journal of Systematic and Evolutionary Microbiology 52: 1577-1595. DOI: 10.1099/ijs.0.01834-0