The Stieltjes string model with external load. - Nataliya Dilna; Michal Feckan (Appl. Math. Comput., 2018)

On a Class of Functional Differential Equations with Symmetries. - Nataliya Dilna; Michal Feckan; András Rontó (Symmetry, 2019)

D-Stability of the Initial Value Problem for Symmetric Nonlinear Functional Differential Equations. - Natalia Dilna; Michal Feckan; Mykola Solovyov (Symmetry, 2020)