1. Permutable entire functions;Baker, Irvine Noel;Math. Z.,1962
2. On the zeros of 𝑓(𝑔(𝑧)) where 𝑓 and 𝑔 are entire functions;Edrei, Albert;J. Analyse Math.,1964
3. F. Gross, Entire solutions of the functional equation 𝛼(𝛽(𝑧))=𝛼(𝛾(𝑧))+𝑐, J. Indian Math. Soc. (to appear).
4. On the periodicity of compositions of entire functions;Gross, Fred;Canadian J. Math.,1966
5. Oxford Mathematical Monographs;Hayman, W. K.,1964