Widyaningsih, Bekti, Arivatu Ni’mati Rahmatika, and Hendi Yoga Pranata. 2024. “Effectiveness of Digital Payments to Maintain Financial Portfolio Case Study of QRIS Bank Syariah Indonesia and Bank Muamalat”. Formosa Journal of Sustainable Research 3 (12):2835-48. https://doi.org/10.55927/fjsr.v3i12.12985.