%0 Journal Article
%A A. F. Lavrik
%T A~method for estimating double sums with real quadratic character, and applications
%J Izvestiya. Mathematics 
%D 1971
%P 1195-1214
%V 5
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1971_5_6_a1/
%G en
%F IM2_1971_5_6_a1