● HENSSEN A (1957). [Morphology and system of thermophilic actinomycetes.]. Arch Mikrobiol26, 373-414. ● Desai AJ,Dhala SA (1967). Streptomyces thermonitrlficans sp.n., a thermophilic streptomycete. Antonie van Leeuwenhoek J. Microbiol. Serol.33, 137-144.