Oumelkheir Elbaroud, Lynda Ait Bachir. “The Morningstar Index in Evaluating the Performance of Unicorn Companies: A Comparative Study Between China and the United States”. European Economic Letters (EEL) 15, no. 1 (December 31, 2024): 1965–1980. Accessed November 18, 2025. https://www.eelet.org.uk/index.php/journal/article/view/2581.