Prakoso, Muhammad Fajar Dito, Ariel Izza Kurnia, and Ihsanul Ikhwan. “Efficiency of Indonesian Zakat Institutions in Times of Covid-19: A Two-Stage DEA Analysis”. International Journal of Zakat 8, no. 2 (December 31, 2023): 67–82. Accessed May 27, 2026. https://ijazbaznas.com/index.php/journal/article/view/477.