@article{ARM_1966_2_3_a1,
     author = {Vosmansk\'y, Jarom{\'\i}r},
     title = {The monotonicity of extremants of integrals of the differential equation $y''+q(t)y=0$},
     journal = {Archivum mathematicum},
     pages = {105--111},
     year = {1966},
     volume = {2},
     number = {3},
     mrnumber = {0216072},
     zbl = {0219.34035},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1966_2_3_a1/}
}