@article{ZNSL_1977_71_a15,
     author = {A. A. Suslin and V. I. Kopeiko},
     title = {Quadratic modules and ortogonal group over polynomial rings},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {216--250},
     publisher = {mathdoc},
     volume = {71},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1977_71_a15/}
}