@article{FAA_1969_3_4_a1,
     author = {I. M. Gel'fand and A. S. Mishchenko},
     title = {Quadratic forms over commutative group rings and the $K$-theory},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {28--33},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1969_3_4_a1/}
}