Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AA_1990_2_1_a0, author = {A. N. Andrianov}, title = {Multiplicative properties of solutions of quadratic {Diophantine} problems}, journal = {Algebra i analiz}, pages = {3--46}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1990_2_1_a0/} }
A. N. Andrianov. Multiplicative properties of solutions of quadratic Diophantine problems. Algebra i analiz, Tome 2 (1990) no. 1, pp. 3-46. http://geodesic.mathdoc.fr/item/AA_1990_2_1_a0/