PENGARUH AIR TRAFFIC SERVICE SURVEILLANCE SYSTEM TERHADAP PELAYANAN LALU LINTAS PENERBANGAN DI AIRNAV INDONESIA CABANG MEDAN. JSSR [Internet]. 2024 Nov. 6 [cited 2026 Apr. 13];7(4):1664-75. Available from: https://jurnal.goretanpena.com/index.php/JSSR/article/view/2294