@article{01509537,
title = {Forced superlinear oscillations via Picone's identity.},
journal = {Acta Mathematica Universitatis Comenianae. New Series},
volume = {69},
year = {2000},
pages = {107-113},
zbl = {0959.34024},
language = {en},
url = {http://dml.mathdoc.fr/item/01509537}
}
Jaroš, J.; Kusano, T.; Yoshida, N. Forced superlinear oscillations via Picone's identity.. Acta Mathematica Universitatis Comenianae. New Series, Tome 69 (2000) pp. 107-113. http://gdmltest.u-ga.fr/item/01509537/