@article{RM_1963_18_4_a16,
     author = {V. N. Timofeev},
     title = {On positive quadratic forms representing the same numbers},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1963},
     volume = {18},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1963_18_4_a16/}
}