@article{MZM_1982_32_6_a10,
     author = {R. Babaeva},
     title = {An estimate for the number of integral points on certain surfaces of second order},
     journal = {Matemati\v{c}eskie zametki},
     pages = {853--868},
     publisher = {mathdoc},
     volume = {32},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1982_32_6_a10/}
}