THE USE OF PARAMETERS OF CHLOROPHYLL A FLUORESCENCE INDUCTION TO EVALUATE THE STATE OF PLANTS UNDER ANTHROPOGENIC LOAD Article Orekhov D.I., Yakovleva O.V., Goryachev S.N., Protopopov F.F., Alekseev A.A. Biophysics. Pleiades Publishing, Ltd.. Vol. 60. 2015. P. 263-268