On some Solution of Equation Phi(x)+phi(f(x))=f(x) Under the Condition That f Satisfies F(f^p(x))=f(x) Mirjana Malenica — 1981 Publications de l'Institut Mathématique
On the Solutions of the Functional Equation x ( t ) + A ( t ) x ( f ( t ) ) = F ( t ) When the Function F Satisfies Some Special Conditions Mirjana Malenica — 1993 Matematički Vesnik