Putri, A.; Novida, E.; Khairunnisayah, T.; Azzahri, R.; Austin, T. Digital Payment for All: A SLR Ana Bibliometric Study of the Constraints and Strategies of Expansion of ETPD, QRIS, and Realtime Payment in Sumatera - A Global Perspective. Annual International Conference on Islamic Economics and Business (AICIEB) 2025, 5, 164-183.