Hayrapetyan, A. (2016) “INVESTIGATION OF DIFFERENT ENVIRONMENTAL FACTORS ROLE IN THE FORMATION OF ZOOPLANKTON COMMUNITY IN THE ARPA RIVER (ARMENIA) AND ITS MAIN TRIBUTARIES”, Proceedings of the YSU B: Chemical and Biological Sciences, 50(3 (241), pp. 53–59. doi: 10.46991/PYSU:B/2016.50.3.053.