Nguyen Quang Chung. “THE INDUCTIVE METHOD FOR INFINITE-TIME RUIN PROBABLILITY IN QUOTA- (α, β) REINSURANCE MODEL”. UTEHY Journal of Applied Science and Technology, Vol. 25, Apr. 2020, pp. 71-73, http://jst.utehy.edu.vn/index.php/jst/article/view/359.