NARAYANAN RAVISANKAR, and JERRINE JOSEPH. “COMPARATIVE LC-MS PROFILE OF THE THREE SPECIES HYPERICUM HOOKERIANUM, HYPERICUM MYSORENSE AND HYPERICUM WIGHTIANUM”. International Journal of Pharma and Bio Sciences, vol. 6, no. 3, Sept. 2015, pp. 373-8, https://ijpbs.net/index.php/journal/article/view/4475.