%0 Journal Article %A O. N. Makurina %A S. A. Rozina %T Effects of pollutants on enzyme activities in water submerged plant {\it Ceratophyllum demersum} %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2012 %P 200-210 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2012_9_a19/ %G ru %F VSGU_2012_9_a19