Huy, Dinh Tran Ngoc, Nguyen Thi Phuong Thanh, and Luong MInh Lan. 2020. “The Impact of a One Factor Model on Risk Level of Viet Nam Medicine Industry”. Current Strategies in Economics and Management Vol. 3, June, 38-47. https://stm1.bookpi.org/index.php/csem-v3/article/view/1564.