@article{DAN_1984_277_3_a6,
     author = {V. A. Plaksin},
     title = {Representation of a natural number by a pair of quadratic forms},
     journal = {Doklady Akademii Nauk},
     pages = {546--548},
     publisher = {mathdoc},
     volume = {277},
     number = {3},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_277_3_a6/}
}