Geodesic
FORCED SUPERLINEAR OSCILLATIONS VIA PICONE'S IDENTITY
Acta mathematica Universitatis Comenianae, Tome 69 (2000) no. 1 
J. Jaros; T. Kusano; N. Yoshida. FORCED SUPERLINEAR OSCILLATIONS VIA PICONE'S IDENTITY. Acta mathematica Universitatis Comenianae, Tome 69 (2000) no. 1. http://geodesic.mathdoc.fr/item/AMUC_2000_69_1_a9/
@article{AMUC_2000_69_1_a9,
     author = {J. Jaros and T. Kusano and N. Yoshida},
     title = {FORCED {SUPERLINEAR} {OSCILLATIONS} {VIA} {PICONE'S} {IDENTITY}},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {2000},
     volume = {69},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2000_69_1_a9/}
}
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%J Acta mathematica Universitatis Comenianae
%D 2000
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%N 1
%U http://geodesic.mathdoc.fr/item/AMUC_2000_69_1_a9/
%F AMUC_2000_69_1_a9

Voir la notice de l'article provenant de la source Comenius University

In the paper a nonlinear version of an identity known in the literature as the Picone's formula is derived and then it is used to extend the classical Sturmian comparison theory to forced superlinear equations of the second order.