Mahmud, S, S Akter, IA Jahan, S Khan, A Khaleque, and S Islam. 2015. “Comparative Analyses of Stevioside Between Fresh Leaves and In-Vitro Derived Callus Tissue from Stevia Rebaudiana Bert. Using HPLC”. Bangladesh Journal of Scientific and Industrial Research 49 (4), 199-204. https://doi.org/10.3329/bjsir.v49i4.22621.