Perlin, Marcelo Scherer, Mauro Mastella, Daniel Francisco Vancin, and Henrique Pinto Ramos. “A GARCH Tutorial With R”. Journal of Contemporary Administration 25, no. 1 (July 22, 2020): e200088. Accessed April 24, 2024. https://rac.anpad.org.br/index.php/rac/article/view/1420.