Martirosyan, L. et al. 2018. ESTIMATION OF GEOMORPHOLOGICAL RESOURCES OF NORTHERN ARMENIA FOR DEVELOPMENT OF RECREATION AND TOURISM. Proceedings of the YSU C: Geological and Geographical Sciences. 52, 2 (246) (Aug. 2018), 133–140. DOI:https://doi.org/10.46991/PYSU:C/2018.52.2.133.