Jongadsayakul, Woradee. “A Box Spread Test of the SET50 Index Options Market Efficiency: Evidence from the Thailand Futures Exchange”. International Journal of Economics and Financial Issues 6, no. 4 (October 21, 2016): 1744–1749. Accessed November 21, 2024. https://econjournals.com.tr/index.php/ijefi/article/view/2741.