@article{IM2_2001_65_6_a1,
     author = {V. G. Zhuravlev},
     title = {Deformations of quadratic {Diophantine} systems},
     journal = {Izvestiya. Mathematics },
     pages = {1085--1126},
     publisher = {mathdoc},
     volume = {65},
     number = {6},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2001_65_6_a1/}
}