Marlina, Lina, et al. “The Impact of the Covid-19 Pandemic on the Efficiency Performance of Islamic Banks in Indonesia: A Two-Stage Data Envelopment Analysis Approach”. Al-Uqud : Journal of Islamic Economics, vol. 8, no. 1, Apr. 2024, pp. 67-82, doi:10.26740/aluqud.v8n1.p67-82.