Dr. Jasvir S. Sura, et al. “Efficiency of Indian Public and Private Sector Banks: A Two-Decade Analysis (2001-2021) Using Data Envelopment Analysis”. International Journal for Research Publication and Seminar, vol. 14, no. 1, Mar. 2023, pp. 361-77, https://jrps.shodhsagar.com/index.php/j/article/view/1397.