Ketkaew L. Legal Measures to Solve the Problem of Old Age Social Security : Case Study on Old Age Pensions and Old Age Pension. NULJ [internet]. 2015 Nov. 1 [cited 2026 Sep. 15];8(2):157-82. available from: https://so04.tci-thaijo.org/index.php/lawnujournal/article/view/98724