อุฬารวงศ์ ส. “The Limitation of Beneficiary in Social Security Act B.E. 2533: Case Study on Retirement Pension and Allowance”. CRRU Law, Political Science and Social Science Journal, vol. 5, no. 2, July 2021, pp. 239-62, https://so06.tci-thaijo.org/index.php/lawcrru/article/view/247829.