Ieosanurak, W., S. Khotama, S. Boonta, and W. Klongdee. “On the Probability of Stopping Time of the Target Equity Allocation Management Strategy”. Progress in Applied Science and Technology, vol. 7, no. 1, June 2017, pp. 99-104, https://ph02.tci-thaijo.org/index.php/past/article/view/243115.