@article{AUPO_1960__1_1_a0,
     author = {Laitoch, Miroslav},
     title = {\"Uber die {Nullstellenanzahl} del {L\"osungen} der {Differentialgleichung} $y'' = Q(t)\cdot y$},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {5--9},
     publisher = {mathdoc},
     volume = {01},
     number = {1},
     year = {1960},
     mrnumber = {0287079},
     zbl = {0115.30202},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1960__1_1_a0/}
}