@article{120064,
author = {Miroslav Laitoch},
title = {A modification of the Sturm's theorem on separating zeros of solutions of a linear differential equation of the 2nd order},
journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
volume = {17},
year = {1978},
pages = {27-33},
zbl = {0429.34011},
mrnumber = {0554033},
language = {en},
url = {http://dml.mathdoc.fr/item/120064}
}
Laitoch, Miroslav. A modification of the Sturm's theorem on separating zeros of solutions of a linear differential equation of the 2nd order. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 17 (1978) pp. 27-33. http://gdmltest.u-ga.fr/item/120064/
Lineare Differentialgleichungen 2. Ordnung, VEB, DVW, Berlin 1967, 218 pages. (1967) | MR 0236448
On the Differential Equation y" + p(x). y =f(x), J. of Math. Anal. and Appl. 43, 46-55 (1973). (1973) | MR 0315213
Kurs diferenciálních rovnic, Přírodov. nakl., Praha 1952, 512 pages (translation from Russian). (1952)