On the bundle of solutions of a nonhomogeneous second order linear differential equation Miloslav Fialka — 1995 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
On a coincidence of the differential equation y ' ' - q ( t ) y = r ( t ) with its associated equation Miloslav Fialka — 1988 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
On the position of nodes of associated equations to the differential equation y ' - q ( t ) y = r ( t ) Miloslav Fialka — 1991 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica