Sokolova , G.G. 2020. Impact of technogenic pollution on the pigment composition of birch leaves (Betula pendula Roth) in the urban conditions of Barnaul. Проблемы ботаники Южной Сибири и Монголии. 19, 1 (Jun. 2020), 223-228. DOI:https://doi.org/10.14258/pbssm.2020044.