Khavtgai, Zoljargal, et al. “Fertility Status and Soil Quality Index in Forest Soil of Khangai, Khentii, and Khuvsgul Ranges”. Mongolian Journal of Geography and Geoecology, vol. 61, no. 45, Dec. 2024, pp. 98-107, doi:10.5564/mjgg.v61i45.3368.