Geodesic
Monotonic properties of zeros and extremants of the differential equation $y''+q(t)y=0$
Archivum mathematicum, Tome 6 (1970) no. 1, pp. 37-74 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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Classification : 34C10 
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}
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Vosmanský, Jaromír. Monotonic properties of zeros and extremants of the differential equation $y''+q(t)y=0$. Archivum mathematicum, Tome 6 (1970) no. 1, pp. 37-74. http://geodesic.mathdoc.fr/item/ARM_1970_6_1_a3/

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