Moyo C, Anyikwa I, Phiri A. The Impact of Covid-19 on Oil Market Returns: Has Market Efficiency Being Violated?. IJEEP [Internet]. 2023 Jan. 22 [cited 2024 Jul. 4];13(1):118-27. Available from: https://econjournals.com.tr/index.php/ijeep/article/view/13453