@article{1250775915,
author = {Yoshizawa, Taro},
title = {Existence of a bounded solution and existence of a periodic solution of the differential equation of the second order},
journal = {Mem. College Sci. Univ. Kyoto Ser. A Math.},
volume = {33},
number = {2},
year = {1960},
pages = { 301-308},
language = {en},
url = {http://dml.mathdoc.fr/item/1250775915}
}
Yoshizawa, Taro. Existence of a bounded solution and existence of a periodic solution of the differential equation of the second order. Mem. College Sci. Univ. Kyoto Ser. A Math., Tome 33 (1960) no. 2, pp. 301-308. http://gdmltest.u-ga.fr/item/1250775915/