TY  - JOUR
AU  - A. V. Ustinov
TI  - On the number of solutions of the congruence $xy\equiv l$ $(\operatorname{mod}q)$ under the graph of a~twice continuously differentiable function
JO  - Algebra i analiz
PY  - 2008
SP  - 186
EP  - 216
VL  - 20
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_2008_20_5_a7/
LA  - ru
ID  - AA_2008_20_5_a7
ER  -