On the attractivity properties for the equation $x'' + a\left( t \right)f_1 \left( x \right)g_1 \left( {x'} \right)x' + b\left( t \right)f_2 \left( x \right)g_2 \left( {x'} \right)x = e\left( {t,x,x'} \right)$
@article{1195516258,
author = {Sakata, Sadahisa},
title = {On the attractivity properties for the equation $x'' + a\left( t \right)f\_1 \left( x \right)g\_1 \left( {x'} \right)x' + b\left( t \right)f\_2 \left( x \right)g\_2 \left( {x'} \right)x = e\left( {t,x,x'} \right)$},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {57},
number = {1},
year = {1981},
pages = { 454-457},
language = {en},
url = {http://dml.mathdoc.fr/item/1195516258}
}
Sakata, Sadahisa. On the attractivity properties for the equation $x'' + a\left( t \right)f_1 \left( x \right)g_1 \left( {x'} \right)x' + b\left( t \right)f_2 \left( x \right)g_2 \left( {x'} \right)x = e\left( {t,x,x'} \right)$. Proc. Japan Acad. Ser. A Math. Sci., Tome 57 (1981) no. 1, pp. 454-457. http://gdmltest.u-ga.fr/item/1195516258/