Witayakiattilerd, Wichai, Chalermpol Neaimsri, Thanyamas Atthaphichan, Chatsiya Boontam, and Panya Senarat. 2025. “Unleashing the Potential: Exploring Cashless Investment Strategies through Short-Selling Techniques and Modern Portfolio Theory”. Thailand Statistician 23 (4):875-92. https://ph02.tci-thaijo.org/index.php/thaistat/article/view/261569.