@article{SM_2020_211_12_a3,
     author = {I. A. Panin},
     title = {Two purity theorems and the {Grothendieck-Serre} conjecture concerning principal $\mathbf G$-bundles},
     journal = {Sbornik. Mathematics},
     pages = {1777--1794},
     publisher = {mathdoc},
     volume = {211},
     number = {12},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2020_211_12_a3/}
}