“QUANTITATIVE AND QUALITATIVE EVALUATION OF MORPHOMETRIC INDICES IN SHIRAK REGION FROM THE VIEWPOINT OF EVALUATION OF ECOLOGICAL SITUATION”, Proc. YSU C: Geol. Geogr. Sci., vol. 41, no. 1 (212), pp. 131–137, Mar. 2007, doi: 10.46991/PYSU:C/2007.41.1.131.