Palinska, Katarzyna A.; Liesack, Werner; Rhiel, Erhard; Krumbein, W. E. (17 October 1996). "Phenotype variability of identical genotypes: the need for a combined approach in cyanobacterial taxonomy demonstrated on Merismopedia -like isolates". Archives of Microbiology. 166 (4): 224–233. doi:10.1007/s002030050378.