Improved Bioactive Metabolite Production by Saccharopolyspora halotolerans VSM-2 Using Response Surface Methodology and Unstructured Kinetic Modelling, Managamuri, Ushakiranmayi, Vijayalakshmi Muvva, Indupalli Mani Deepa, Ganduri Venkat Siva Rama, Rajulapati Satish Babu, and Poda Sudhakar , Pharmacognosy Journal, August 2018, Volume 10, Issue 5, p.833-840, (2018)