@article{IVM_1962_5_a2,
     author = {M. I. Voilokov},
     title = {Massera's method of proving uniqueness of a limit cycle},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {22--28},
     publisher = {mathdoc},
     number = {5},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1962_5_a2/}
}