Qaraqechichian, H. M., Elbakian, Z. G., & Navasardyan, I. A. (2006). ESTIMATION OF CLIMATIC CONDITIONS INFLUENCING ON PRODUCTIVITY. Proceedings of the YSU B: Chemical and Biological Sciences, 40(3 (211), 94–99. https://doi.org/10.46991/PYSU:B/2006.40.3.094