Difference equations on discrete polynomial hypergroups. Orosz, Ágota — 2006 Advances in Difference Equations [electronic only]
On the rectifiability condition of a second order ordinary differential equation. Bácsó, Sándor; Orosz, Ágota; Szilágyi, Brigitta — 2001 Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]