Yohan Kartiko, Erik, et al. “Comparative Study of Normalization Methods for DEMNAS Elevation Data to Grayscale Representation for 3D Terrain Visualization”. International Journal of Multidisciplinary Sciences and Arts, vol. 4, no. 3, Aug. 2025, pp. 149-55, doi:10.47709/ijmdsa.v4i3.6717.