Kesamoon, Chainaraong, and Wichai Witayakiattilerd. 2020. “Hierarchy Analysis Process Under Fuzzy Environment: A Positive Way of Selecting Stocks into Portfolio Under Ambiguity in Stock Information”. Science & Technology Asia 24 (4):1-11. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/173504.