Bintang Rachmainie Poetri Setiawan, Thomas Andrian, and Dian Fajarini. “The Effect of Non-Cash Payment Instruments and Interest Rates on the Velocity of Money in Indonesia”. Indonesian Journal of Economics Management and Accounting, vol. 2, no. 8, Aug. 2025, pp. 2213-9, https://jurnal.intekom.id/index.php/ijema/article/view/1487.