@article{AUPO_1982__21_1_a6,
     author = {Pavl{\'\i}kov\'a, Elena},
     title = {Higher monotonicity properties of  $i$-th derivatives of solutions of  $y'' + a(x) y' + b(x) y = 0$},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {69--78},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1982},
     mrnumber = {0702609},
     zbl = {0522.34033},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1982__21_1_a6/}
}