Lim, Kian-Ping, and Hock-Ann Lee. “Non-Parametric Cointegration Analysis of ASEAN-5 Real Exchange Rates”. International Journal of Management Studies 11, no. 1 (June 5, 2004): 41–56. Accessed May 3, 2024. https://e-journal.uum.edu.my/index.php/ijms/article/view/9159.