Piloyan, A.S. “ON SOME GEOMORPHOMETRIC PARAMETERS OF THE AGHSTEV RIVER BASIN OF THE RA”. Proceedings of the YSU C: Geological and Geographical Sciences, vol. 46, no. 1 (227), Apr. 2012, pp. 32-39, doi:10.46991/PYSU:C/2012.46.1.032.