Koirala, Niranjan, Sareeta Khanal, Sujan Chaudhary, Sagar Gautam, Shiv Nandan Sah, Prince Subba, Najat Marraiki, and Gaber El-Saber Batiha. 2021. “Potential Surface Active Agent Production Using Very Low Grade and Cheap Substrate by Bacillus Subtilis As Microbial Cell Factory”. Nepal Journal of Biotechnology 9 (2):21-28. https://nepjol.info./index.php/NJB/article/view/41910.