@article{MZM_2009_85_1_a13,
     author = {V. V. Kucherenko and A. V. Krivko},
     title = {Existence {Theorem} for {Hyperbolic} {Systems} with a {Multiplicity} {Change} {Point} of at {Most} the {Third} {Order}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {139--143},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_85_1_a13/}
}