Charoonratana, Tossaton, et al. “DEVELOPMENT AND VALIDATION OF LC-MS METHOD FOR QUANTITATIVE ANALYSIS OF A TRADITIONAL THAI ANTIHYPERTENSIVE HERBAL RECIPE”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 6, no. 8, Aug. 2014, pp. 259-62, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/2774.