@article{ND_2011_7_1_a7,
     author = {V. Ph. Zhuravlev},
     title = {Comments on {``Lagrangian} mechanics and dry friction'' by {V.\,V.~Kozlov}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {147--149},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2011_7_1_a7/}
}