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To the theory of central dispersions for the linear differential equations y" = q(t)y of a finite type - special. Acta Univ. Palackianae Olomucensis (Olomouc), Fac.Rer.Nat. 88 (1987).
MR 1033333
[3] Tesaříková E.:
On the properties of central dispersions of linear second order differential equations being of finite type - special. Acta Univ. Palackianae Olomucensis (Olomouc), Fac.Rer.Nat. (1989).
Zbl 0713.34012
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On equations y" = q(t)y of finite type, 1-special, with the same central dispersion of the first kind. Acta Univ. Palackianae Olomucensis (Olomouc), Fac.Rer.Nat. (1989).
MR 1053736