@article{TMF_2008_155_2_a12,
     author = {V. V. Sokolov and S. Ya. Startsev},
     title = {Symmetries of nonlinear hyperbolic systems of {the~Toda} chain type},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {344--355},
     publisher = {mathdoc},
     volume = {155},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2008_155_2_a12/}
}