Geodesic
On oscillatory solutions of fourth order ordinary differential equations
Czechoslovak Mathematical Journal, Tome 49 (1999) no. 4, pp. 779-790.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

The paper deals with the oscillation of a differential equation $L_4y+P(t)L_2y+Q(t)y\equiv 0$ as well as with the structure of its fundamental system of solutions.
Classification : 34A25, 34A30, 34C10, 34D05
Keywords: linear differential equation; quasi-derivative; monotone solution; Kneser solution; oscillatory solution 
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     author = {Palumb{\'\i}ny, Oleg},
     title = {On oscillatory solutions of fourth order ordinary differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {779--790},
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     volume = {49},
     number = {4},
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     zbl = {1015.34018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1999__49_4_a8/}
}
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Palumbíny, Oleg. On oscillatory solutions of fourth order ordinary differential equations. Czechoslovak Mathematical Journal, Tome 49 (1999) no. 4, pp. 779-790. http://geodesic.mathdoc.fr/item/CMJ_1999__49_4_a8/