G . S. Gupta, Ch’ng Huck Khoon, and Suhaimi Shahnon. “How Many Securities Make A Diversified Portfolio in KLSE Stocks?”. Asian Academy of Management Journal 6, no. 1 (June 29, 2001): 63–79. Accessed July 3, 2024. https://ejournal.usm.my/aamj/article/view/aamj_vol6-no-1-2001_5.