@article{ARM_1980__16_3_a2,
     author = {H\'a\v{c}ik, Milo\v{s}},
     title = {A note on higher monotonicity properties of certain {Sturm} {Liouville} functions},
     journal = {Archivum mathematicum},
     pages = {153--159},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {1980},
     mrnumber = {594460},
     zbl = {0451.34033},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1980__16_3_a2/}
}