@article{120174,
author = {Jitka Laitochov\'a},
title = {On transformations of two homogeneous linear second order differential equations of a general and of Sturm forms},
journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
volume = {25},
year = {1986},
pages = {77-95},
zbl = {0643.34048},
mrnumber = {918370},
language = {en},
url = {http://dml.mathdoc.fr/item/120174}
}
Laitochová, Jitka. On transformations of two homogeneous linear second order differential equations of a general and of Sturm forms. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 25 (1986) pp. 77-95. http://gdmltest.u-ga.fr/item/120174/
Linear Differential Transformations of the Second Order, The English University Press, London, 1971. (1971) | MR 0463539
Teorija globalnych svojstv obyknovennych linějnych differencialnych uravnenij n-go porjadka, Differencialnye uravnenija 19 (1983), 799-808. (1983)