@article{ZNSL_2020_490_a4,
     author = {I. Panin},
     title = {A purity theorem for quadratic spaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {98--103},
     publisher = {mathdoc},
     volume = {490},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2020_490_a4/}
}