Septiawan, Reza Septiawan, Bayu Sutedjo, and Afrias Sarotama. 2012. “RAIM DALAM RANGKA MENDUKUNG IMPLEMENTASI SISTEM NAVIGASI PENERBANGAN BERBASISKAN SATELIT DI INDONESIA (RAIM IN THE IMPLEMENTATION OF SATELLITE BASED NAVIGATION IN INDONESIAN AIR TRAFFIC MANAGEMENT)”. Indonesian Journal of Aerospace 10 (1 Juni):37-49. https://ejournal.brin.go.id/ijoa/article/view/12355.