%0 Journal Article %A Vosmanský, Jaromír %T The monotonicity of extremants of integrals of the differential equation $y''+q(t)y=0$ %J Archivum mathematicum %D 1966 %P 105-111 %V 2 %N 3 %U http://geodesic.mathdoc.fr/item/ARM_1966_2_3_a1/ %G en %F ARM_1966_2_3_a1