@article{GDZPPN00255058X,
title = {Almost periodic weak solutions to forced pendulum type equations without friction. (Summary).},
journal = {Aequationes mathematicae},
volume = {44},
year = {1992},
pages = {313-313},
zbl = {0763.34035},
url = {http://dml.mathdoc.fr/item/GDZPPN00255058X}
}
Belley, J.-M.; Fournier, G. Almost periodic weak solutions to forced pendulum type equations without friction. (Summary).. Aequationes mathematicae, Tome 44 (1992) p. 313. http://gdmltest.u-ga.fr/item/GDZPPN00255058X/