@article{120151,
author = {Vladim\'\i r Vl\v cek},
title = {On a distribution of zeros of solutions of an iterated differential equation of the $n$-th order},
journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
volume = {23},
year = {1984},
pages = {53-73},
zbl = {0586.34030},
mrnumber = {837030},
language = {en},
url = {http://dml.mathdoc.fr/item/120151}
}
Vlček, Vladimír. On a distribution of zeros of solutions of an iterated differential equation of the $n$-th order. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 23 (1984) pp. 53-73. http://gdmltest.u-ga.fr/item/120151/
The first conjugate point of solution of the N-th order iterated differential equation, Acta Univ. Palackianae Olomucensis F. R. N., 1982, Тom 73. (1982) | Zbl 0522.34029
Lineare Differentialtransformationen 2. Ordnung, VEB Deutscher Verlag der Wissenschaften, Berlin, 1967. (1967) | MR 0236448
Conjugate points of solutions of an iterated differential equation of the N-th order, Acta Univ. Palackianae Olоmucensis F. R. N., 1983, Тоm 76. (1983) | Zbl 0545.34025