“VALIDATION OF THE PROCEDURE FOR QUANTIFYING DITERPENE LACTONES AND STABILITY STUDY OF ANDROGRAPHIS PANICULATA HARD CAPSULES” (2026) TRA VINH UNIVERSITY JOURNAL OF SCIENCE, 16(2). Available at: https://journal.tvu.edu.vn/index.php/journal/article/view/163 (Accessed: 27 June 2026).