1. Complementary Chapters of the Theory of Ordinary Differential Equations;Arnold,1978
2. Solution générale de l'équation fonctionnelle ƒN (χ) = g (χ);Bajaktarević;Publ. Inst. Math. (Beograd) (N.S.),1965
3. Sur la solution générale de l'équation fonctionnelle ƒN−m hƒm (χ) = g (χ);Bajaktarević;Publ. Inst. Math. (Beograd) (N.S.),1965
4. The iteration of entire transcendental functions and the solution of the functional equation ƒ{ƒ(z)} = F (z);Baker;Math. Ann.,1955
5. Zusammensetzungen Ganzen Funktionen;Baker;Math. Z.,1958