A. Assis de Salles in R. Barros Lima, „Carbon Credits and Crude Oil: An Investigation of the Price Returns Interaction in the International Market“, OE, let. 70, št. 1, str. 1–12, apr. 2024, Pridobljeno: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/4164