Syahbana, A.N. and Chotijah, U. 2024. RADIACHECK: Implementation of Radioactive Radiation Monitoring Information System Using Waterfall Method at PT Petrokimia Gresik. Instal : Jurnal Komputer. 16, 05 (Dec. 2024), 30–40. DOI:https://doi.org/10.54209/jurnalinstall.v16i05.306.