A note on the asymptotic behavior of the solutions of $\ddot x + a\left( t \right)f\left( {\ddot x} \right)\ddot x + b\left( t \right)\phi \left( {\dot x,\ddot x} \right) + c\left( t \right)g\left( {\dot x} \right) + d\left( t \right)h\left( x \right) = p\left( {t,x,\dot x,\ddot x,\ddot x} \right)$
@article{1195519341,
author = {Hara, Tadayuki},
title = {A note on the asymptotic behavior of the solutions of $\ddot x + a\left( t \right)f\left( {\ddot x} \right)\ddot x + b\left( t \right)\phi \left( {\dot x,\ddot x} \right) + c\left( t \right)g\left( {\dot x} \right) + d\left( t \right)h\left( x \right) = p\left( {t,x,\dot x,\ddot x,\ddot x} \right)$},
journal = {Proc. Japan Acad.},
volume = {49},
number = {9},
year = {1973},
pages = { 314-316},
language = {en},
url = {http://dml.mathdoc.fr/item/1195519341}
}
Hara, Tadayuki. A note on the asymptotic behavior of the solutions of $\ddot x + a\left( t \right)f\left( {\ddot x} \right)\ddot x + b\left( t \right)\phi \left( {\dot x,\ddot x} \right) + c\left( t \right)g\left( {\dot x} \right) + d\left( t \right)h\left( x \right) = p\left( {t,x,\dot x,\ddot x,\ddot x} \right)$. Proc. Japan Acad., Tome 49 (1973) no. 9, pp. 314-316. http://gdmltest.u-ga.fr/item/1195519341/