Aghajanyan, E. et al. 2011. ESTIMATION OF SOIL POLLUTION BY HEAVY METALS IN YEREVAN CITY WITH TRADESCANTIA (clone 02). Proceedings of the YSU B: Chemical and Biological Sciences. 45, 1 (224) (Feb. 2011), 44–48. DOI:https://doi.org/10.46991/PYSU:B/2011.45.1.044.