TY  - JOUR
AU  - A. F. Lavrik
TI  - A~method for estimating double sums with real quadratic character, and applications
JO  - Izvestiya. Mathematics 
PY  - 1971
SP  - 1195
EP  - 1214
VL  - 5
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1971_5_6_a1/
LA  - en
ID  - IM2_1971_5_6_a1
ER  -