D. Upreti, N. P. Sapkota, B. Aryal, and S. Shakya, “Accumulation of Poly-hydroxy-butyric Acid (PHB) by Bacillus Strain Isolated from Paddy Field of Kathmandu University Premises”, Nepal J Biotechnol, vol. 3, no. 1, pp. 2–5, Dec. 2015.