عبد السلام عوض. **The Role of Islamic Financial Engineering Products in Achieving Islamic Banking Efficiency: A Field Study on Sudanese Banks**. University of Sinnar Journal for Applied Sciences, [S. l.], v. 1, n. 2, 2021. Disponível em: http://ojs.uofs.edu.sd/index.php/As/article/view/40. Acesso em: 12 may. 2025.