@article{MZM_1988_44_1_a15,
     author = {N. S. Nadirashvili},
     title = {Conditions of stability in the sense of {Poisson} of a geodesic flow on a torus},
     journal = {Matemati\v{c}eskie zametki},
     pages = {147--149},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1988_44_1_a15/}
}