"LJUNG-BOX AUTOREGRESSIVE MODEL FOR THE RETURNS OF THREE NIGERIAN INSURANCE COMPANIES’ STOCKS" (2019) FULafia Journal of Science and Technology, 5(2), ص 169–175. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/200 (تاريخ الوصول: 17 مايو 2026).