@article{RLINA_1977_8_63_6_a2,
     author = {Ezeilo, James O.C.},
     title = {Further results on the existence of periodic solutions of a certain third order differential equation},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
     pages = {493--503},
     publisher = {mathdoc},
     volume = {Ser. 8, 63},
     number = {6},
     year = {1977},
     zbl = {0405.34041},
     mrnumber = {0542611},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLINA_1977_8_63_6_a2/}
}