Saltan, N., Svyatkovskaya, E., & Trostenyuk, N. (2020). Fluctuating Asymmetry of Leaves of Betula pubescens Ehrh. for Assessment of Pollution of the Urban Environment of the Kola North. KnE Life Sciences, 5(1), 37–43. https://doi.org/10.18502/kls.v5i1.6017