@article{RLINA_1979_8_66_5_a3,
     author = {Ezeilo, James O.C. and Tejumola, Haroon O.},
     title = {Periodic solutions of a certain fourth order differential equation},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
     pages = {344--350},
     publisher = {mathdoc},
     volume = {Ser. 8, 66},
     number = {5},
     year = {1979},
     zbl = {0475.34022},
     mrnumber = {138018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLINA_1979_8_66_5_a3/}
}