Dr. A. Shaji George, A. S. Hovan George, Dr. T. Baskar, and A. S. Gabrio Martin. “An Overview of India’s Unified Payments Interface (UPI): Benefits, Challenges, and Opportunities”. Partners Universal International Research Journal, vol. 2, no. 1, Mar. 2023, pp. 16-23, doi:10.5281/zenodo.7723154.