Adi, W. T., A. aghastya, N. . Ahda Imron, N. . Fitria Apriliani, I. . Anwer, and P. . Puangprakhon. “Comparison of UAV Drone and Online Terrain Model for Railway Route Planning”. Journal of Railway Transportation and Technology, vol. 1, no. 1, May 2022, pp. 20-27, doi:10.37367/jrtt.v1i1.6.