@article{MZM_2013_93_1_a5,
     author = {A. O. Ignatyev and V. V. Kirichenko},
     title = {On {Necessary} {Conditions} for {Global} {Asymptotic} {Stability} of {Equilibrium} for the {Li\'enard} {Equation}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {63--71},
     publisher = {mathdoc},
     volume = {93},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_93_1_a5/}
}