%0 Journal Article %A E. I. Glinkin %T Assessment pH-activities of biologically active environment %J Vestnik rossijskih universitetov. Matematika %D 2017 %P 471-478 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTAMU_2017_22_2_a6/ %G ru %F VTAMU_2017_22_2_a6