Gurrib I, Elsharief E, Kamalov F. The Effect of Energy Cryptos on Efficient Portfolios of Key Energy Listed Companies in the S&P Composite 1500 Energy Index. IJEEP [Internet]. 2020 Jan. 21 [cited 2024 Dec. 19];10(2):179-93. Available from: https://econjournals.com/index.php/ijeep/article/view/8676