@article{DE_1990_26_8_a0,
     author = {M. A. Balitinov},
     title = {Behavior of solutions of {Hamiltonian} systems in a neighborhood of the equilibrium position in cases of resonance},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1291--1299},
     publisher = {mathdoc},
     volume = {26},
     number = {8},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_8_a0/}
}