Maithani, A., V. Parcha, and D. Kumar. “QUANTITATIVE ESTIMATION OF BERBERINE CONTENT OF BERBERIS ASIATICA FROM DIFFERENT ALTITUDE OF GARHWAL HIMALAYA”. Asian Journal of Pharmaceutical and Clinical Research, vol. 7, no. 6, Feb. 2014, pp. 165-7, https://journals.innovareacademics.in/index.php/ajpcr/article/view/872.