@article{RLINA_1986_8_80_7-12_a6,
     author = {Andres, J\'an},
     title = {Boundedness results of solutions to the equation $x^{\prime\prime\prime} + ax^{\prime\prime}+ g (x) x^{\prime}+ h (x) = p (t)$ without the hypothesis $h (x) \, \operatorname{sgn} x \ge 0$ for $|x| > R$.},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
     pages = {533--539},
     publisher = {mathdoc},
     volume = {Ser. 8, 80},
     number = {7-12},
     year = {1986},
     zbl = {0722.34027},
     mrnumber = {0976947},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLINA_1986_8_80_7-12_a6/}
}