@article{ZNSL_1979_86_a10,
     author = {V. I. Kopeiko and A. A. Suslin},
     title = {Quadratic modules over polynomial rings},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {114--124},
     publisher = {mathdoc},
     volume = {86},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_86_a10/}
}