Rakwatin, C., Nitysuddi, D., Premjit, L., Kovithvattanaphong, R., Wattanapisit, Y. and Tanunkat, O. (1999) “Survey on Stability of Pharmaceutical Products in National List of Essential Drugs Used in Hospitals in Thailand”, Siriraj Medical Journal, 51(4), pp. 262–283. available at: https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246985 (accessed: 30 September 2026).