Lamani, Luis. “An Assessment in Terms of Investment Efficiency in an Informal Economy. A Case Study With 30 Years Biased Data from Albanian Forex Market”. IETI Transactions on Data Analysis and Forecasting (iTDAF) 1, no. 3 (November 14, 2023): pp. 46–60. Accessed August 17, 2024. https://online-journals.org/index.php/iTDAF/article/view/40193.