UMAR, Rusydi; AHNAFI, Muhammad Ghazi. Development of a Web-Based Information System for Smartphone Repair Services at OSDIG Store Using the Waterfall Method. Innovation, Technology, and Entrepreneurship Journal, [S. l.], v. 2, n. 2, p. 70–79, 2025. DOI: 10.31603/itej.13957. Disponível em: https://journal.unimma.ac.id/ITEJ/article/view/13957. Acesso em: 15 oct. 2026.