%0 Journal Article %A A. N. Andrianov %T Multiplicative properties of solutions of quadratic Diophantine problems %J Algebra i analiz %D 1990 %P 3-46 %V 2 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_1990_2_1_a0/ %G ru %F AA_1990_2_1_a0