1.
Umar R, Ahnafi MG. Development of a Web-Based Information System for Smartphone Repair Services at OSDIG Store Using the Waterfall Method. I T E J [Internet]. 2025 Aug. 29 [cited 2026 Oct. 15];2(2):70-9. Available from: https://journal.unimma.ac.id/ITEJ/article/view/13957