%0 Journal Article
%A K. Ya. Kondrat'ev
%A C. Varotsos
%T Ozone depletion over St. Petersburg region as deduced from Nimbus-7 TOMS observations
%J Doklady Akademii Nauk
%D 1993
%P 622-624
%V 331
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_331_5_a16/
%G ru
%F DAN_1993_331_5_a16