Usman, Mustofa, M. Komarudin, Munti Sarida, Wamiliana Wamiliana, Edwin Russel, Mahatma Kufepaksi, Iskandar Ali Alam, and Faiz A.M. Elfaki. “Analysis of Some Variable Energy Companies by Using VAR(p)-GARCH(r,s) Model : Study From Energy Companies of Qatar over the Years 2015–2022”. International Journal of Energy Economics and Policy 12, no. 5 (September 27, 2022): 178–191. Accessed April 19, 2024. https://econjournals.com/index.php/ijeep/article/view/13333.