@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/