Song, Poh Choo, Siok Kun Sek, and Wai Mun Har. “Detecting the Convergence Clubs and Catch−Up in Growth”. Asian Economic and Financial Review 3, no. 1 (January 1, 2013): 1–15. Accessed July 3, 2024. https://archive.aessweb.com/index.php/5002/article/view/964.