@article{TM_1997_216_a7,
     author = {A. Yu. Kolesov and E. F. Mishchenko and N. Kh. Rozov},
     title = {Relay with delay and its $C^1$-approximation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {126--153},
     publisher = {mathdoc},
     volume = {216},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_216_a7/}
}