สิมมา ดร.พีรพล ดร.พีรพล. “PATENT LAW AND PROBLEM OF ACCESS TO PHARMACEUTICAL PRODUCT”. CRRU Law, Political Science and Social Science Journal 4, no. 2 (May 25, 2020): 229–242. Accessed April 24, 2024. https://so06.tci-thaijo.org/index.php/lawcrru/article/view/238929.