Khoyetsian, A. V., G. V. Mikayelyan, and V. S. Muradyan. 2008. “MATHEMATICAL MODELING OF LAND EROSION PROCESSES IN MOUNTAINOUS COUNTRIES”. Proceedings of the YSU C: Geological and Geographical Sciences 42 (1 (215). Yerevan, Armenia:134-40. https://doi.org/10.46991/PYSU:C/2008.42.1.134.