Melkonyan, H. A., and A. A. Gabrielyan. “THE FORECASTING TECHNIQUE OF ATMOSPHERIC POLLUTION BY NITROGEN DIOXIDE IN YEREVAN”. Proceedings of the YSU C: Geological and Geographical Sciences, vol. 44, no. 2 (222), Aug. 2010, pp. 36-40, doi:10.46991/PYSU:C/2010.44.2.036.