On relations among dispersions of an oscillatory differential equation y ' ' = q ( t ) y Miroslav Bartušek (1973) Sborník prací Přírodovědecké fakulty University Palackého v Olomouci. Matematika Similarity:
On proper oscillatory solutions of the nonlinear differential equations of the n -th order Miroslav Bartušek (1988) Archivum Mathematicum Similarity:
On oscillatory properties of solutions of a certain nonlinear third order differential equation Michal Greguš, Jozef Vencko (1992) Czechoslovak Mathematical Journal Similarity: