@article{MAT_1964_8_5_a9,
     author = {N. Aronszajn},
     title = {Quadratic forms on vector spaces},
     journal = {Matematika},
     pages = {102--155},
     publisher = {mathdoc},
     volume = {8},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1964_8_5_a9/}
}