1. Berdy J. Bioactive microbial metabolites. J Antibiot. 2005;58:1–26.
2. Rudi P, Ingrid S, Mayra M. Antibiotics produced by Streptomyces. Braz J Infect Dis. 2002;16:466–71.
3. Tiwari K, Gupta RK. Rare actinomycetes: a potential storehouse for novel antibiotics. Biotechnol. 2012;32:108–32.
4. Paolo M, Marianna I, Sonia M, Margherita S, Stefano D. Discovering new bioactive molecules from microbial sources. Microb Biotechnol. 2014;7:209–20.
5. Monisha K, Renu S, Rup L. Seletive isolation of rare actinomycetes producing novel antimicrobial compoumds. IJABR. 2011;2:357–75.