@article{FAA_2013_47_3_a1,
     author = {L. Gavrilov},
     title = {On the {Number} of {Limit} {Cycles} {Which} {Appear} by {Perturbation} of {Two-Saddle} {Cycles} of {Planar} {Vector} {Fields}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {12--27},
     publisher = {mathdoc},
     volume = {47},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2013_47_3_a1/}
}