http://kpabg.ru/cyanopro/?q=taxonomy/term/1250 Zapomelová, E., Skaácelová, O., Pumann, P., Kopp, R. & Janecek, E. (2012). Biogeographically interesting planktonic Nostocales (Cyanobacteria) in the Czech Republic and their polyphasic evaluation resulting in taxonomic revisions of Anabaena bergii Ostenfeld 1908 (Chrysosporum gen. nov.) and A. tenericaulis Nygaard 1949 (Dolichospermum tenericaule comb. nova). Hydrobiologia 698: 353-365. en