1. Anagnostidis, K., Komarek, J., 1985. Modern approach to the classification system of cyanophytes. I. Introduction. Arch. Hydrobiol. (Suppl. 71) (Algol. Stud. 38/39), 291–302.
2. Studies on the genus Anabaena (Bory). II. A key to the identification of some Anabaena species in culture;Anand;Acta Bot. Indica,1979
3. Cyanobacterial nitrate reduction: process and regulation;Bagchi;Proc. Indian Sci. Acad.,1994
4. Phycoerythrocyanin and phycoerythrin: properties and occurrence in cyanobacteria;Bryant;J. Gen. Microbiol.,1982
5. Phylum BX. Cyanobacteria – oxygenic photosynthetic bacteria;Castenholz,2001