%0 Journal Article %A A. L. Smirnov %A S. S. Yakovenko %T Construction of a linear filtration for bundles of rank $2$ on $\mathbf{P}^1_{\mathbb Z}$ %J Sbornik. Mathematics %D 2017 %P 568-584 %V 208 %N 4 %U http://geodesic.mathdoc.fr/item/SM_2017_208_4_a5/ %G en %F SM_2017_208_4_a5