“OPTIMIZING THE RISK & RETURN OF SHANGHAI STOCK EXCHANGE FOR EUROPEAN MARKETS: APPLICATION OF MODERN PORTFOLIO THEORY”, JESASCE, vol. 36, no. 2, pp. 100–115, Jul. 2020, Accessed: Jan. 19, 2026. [Online]. Available: https://asce-uok.edu.pk/journal/index.php/JES/article/view/147