“QUANTITATIVE CHARACTERISTICS OF BIOGENIC ELEMENTS ENTERED INTO THE ENVIRONMENT AS A RESULT OF ACTIVITY HORNED LIVESTOCKS AND LOAD OF PASTURES IN SYUNIK MARZ” (2011) Proceedings of the YSU B: Chemical and Biological Sciences, 45(1 (224), pp. 65–67. doi:10.46991/PYSUB.2011.45.1.065.