@article{TMF_1998_116_3_a0,
     author = {A. Ya. Kazakov},
     title = {Integral symmetries, integral invariants, and monodromy matrices for ordinary differential equations},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {323--335},
     publisher = {mathdoc},
     volume = {116},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_116_3_a0/}
}