Shahzad K, Jehandad AM, Fatima K. Proxy (Indirect) Methods to Measure Informal Economy of Pakistan (2001–2025): A Comparative Study. Am. J. Appl. Stat. Econ. [Internet]. 2026 Aug. 19 [cited 2026 Aug. 19];5(2):19-30. Available from: https://journals.e-palli.com/home/index.php/ajase/article/view/7979