@article{01369415,
title = {Bounded solutions for second-order ordinary differential equations.},
journal = {Divulgaciones Matem\'aticas},
volume = {7},
year = {1999},
pages = {49-57},
zbl = {0943.34023},
language = {en},
url = {http://dml.mathdoc.fr/item/01369415}
}
Naulin, Raúl. Bounded solutions for second-order ordinary differential equations.. Divulgaciones Matemáticas, Tome 7 (1999) pp. 49-57. http://gdmltest.u-ga.fr/item/01369415/