Elizbarashvili, Nodar, Nino Sulkhanishvili, and Rusudan Elizbarashvili. 2018. “Main Concepts of Sustainable Development and Mountainous Regions (on the Example of the Caucasus)”. Human Geography Journal 25 (December), 66-74. https://doi.org/10.26565/2076-1333-2018-25-06.