Mathematics Model Interest and Actual Use of The ABC Digital Wallet. Nusantara Science and Technology Proceedings, Malang, Indonesia, v. 2023, n. 36, p. 218–223, 2023. DOI: 10.11594/nstp.2023.3631. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/1070. Acesso em: 24 apr. 2025.