@article{DAN_1985_280_1_a11,
     author = {V. I. Levitas},
     title = {Some relations for systems with dry friction},
     journal = {Doklady Akademii Nauk},
     pages = {52--56},
     publisher = {mathdoc},
     volume = {280},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_280_1_a11/}
}