%0 Journal Article %A A. M. Blokhin %A D. L. Tkachev %T Lyapunov instability of stationary flows of a~polymeric fluid in a~channel with perforated walls %J Sbornik. Mathematics %D 2022 %P 283-299 %V 213 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2022_213_3_a0/ %G en %F SM_2022_213_3_a0