Sabur, Fatmawati, Purnamawati, Muhammad Yahya, Abdul Muis, and Mulyadi Nur. “Analysis of Distance and Travel Time Calculations in the Implementation of Non-Directional Beacon Courses”. European Journal of Engineering and Technology Research 9, no. 3 (June 3, 2024): 8–15. Accessed July 4, 2024. https://ej-eng.org/index.php/ejeng/article/view/3161.