1. Allen MB, Arnon DI (1955) Studies on nitrogen fixing blue-green algae. I. Growth and nitrogen fixation by Anabaena cylindrica Lemm. Plant Physiol 30:366–372
2. Bott KF (1974) Regulation of bacterial sporulation. In: MacDonald KD (ed) Second international symposium on the genetics of industrial microorganisms. pp 419–436
3. Brody SS, Brody M (1961) A quantitative assay for the number of chromatophores on a chromoprotein: its application to phycoerythrin and phycocyanin. Biochim Biophys Acta 50:348–352
4. Carr NG (1973) Metabolic control and autotrophic physiology. In: Carr NG, Whitton BA (eds) The biology of blue-green algae. California Press, Berkeley and Los Angeles, pp 39–65
5. Cooney PH, Freese EB, Freese E (1975) Commitment of Bacillus megaterium cells to sporulation. In: Gerhardt P, Costlow RN, Sadoff HL (eds) Spores VI. American Society of Microbiology, Washington DC, pp 187–194