Ekhjargal O, Bumtsend B, Tovuudorj R. Landform classification based on topographic position Index: (A case study in Ulaanbaatar city). Mong. J. Geogr. Geoecol. [Internet]. 2022 Dec. 29 [cited 2024 Nov. 22];59(43):218-26. Available from: https://mongoliajol.info/index.php/MJGG/article/view/2530