Levon, F.M., and G.P. Julavska. 1999. “Features of Physiological-Biochemical Processes in the Leaves of Populus Bolleana Lauche, Ulmus Pinnato-Ramosa Dieck. and Elaeagnus Angustifolia L. In Conditions of Industrial Pollution of the Environment”. Plant Introduction 3 (December), 118-24. https://doi.org/10.5281/zenodo.3365320.