%0 Journal Article %A V. Ph. Zhuravlev %T Comments on ``Lagrangian mechanics and dry friction'' by V.\,V.~Kozlov %J Russian journal of nonlinear dynamics %D 2011 %P 147-149 %V 7 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2011_7_1_a7/ %G ru %F ND_2011_7_1_a7