I. Sonhaji, F. Fatonah, and D. Jatmoko, “Flight Route Optimization in Required Navigation Performance (RNP) Approach Flight Procedures Based on Experimental Algorithm”, Int. Conf. Adv. Transp. Eng. Appl. Soc. Sci., vol. 2, no. 1, pp. 1031–1035, Dec. 2023.