1) Watanabe, M. F. and Oishi, S. (1980) Toxicities of Microcystis aeruginosa Collected from Some Lakes, Reservoirs, Ponds and a Moat in Tokyo and Adjacent Regions, Japanese Journal of Limmology, 41, 5-9.
5) Kurmayer, R., Dittmann, E., Fastner, J. and Chorus, I. (2002) Diversity of Microcystin Genes within a Population of the Toxic Cyanobacterium Microcystis spp. In Lake Wannsee (Berlin, Germany), Microbial Ecology, 43, 107-118.