Khakimova K. R., and Atajonova X. R. “Graphical Basics Of Geoinformation Systems (GIS)”. The American Journal of Engineering and Technology 2, no. 08 (August 25, 2020): 59–63. Accessed February 22, 2026. https://theamericanjournals.com/index.php/tajet/article/view/2676.