M’Azzuri, Banni Yulia, Toto Indriyanto, and Javensius Sembiring. “Fuel Efficiency Comparison of PBN and ILS Approach Procedures at Sam Ratulangi Airport”. Indonesian Journal of Aerospace 22, no. 2 (May 26, 2025): 167–182. Accessed December 6, 2025. https://ejournal.brin.go.id/ijoa/article/view/8968.