1. Birkhoff, G.D. (1929) Démonstration, d’un théorèm étèmentaire sur les fonctions entières. Comptes Rendus de l’Académie des Sciences, 189, 473-475.
2. Luh, W. (1976) On Universal Functions. Colloquia Mathematica Societatis János Bolyai, 19, 503-511.
3. Universal vectors for operators on spaces of holomorphic functions
4. Grosse-Erdmann, K.G. (1987) Holomorphe Monster und universelle Funktionen [Holomorphic Monsters and Universal Functions] [German]. Ph.D. Dissertation, University of Trier, Trier.
5. Genericity of wild holomorphic functions and common hypercyclic vectors