1. Ahlfohrs, L.V.: Complex Analysis an Introduction to the Theory of Analytic Functions of One Complex Variable, 3rd edn. McGraw-Hill Book Co., New York (1978)
2. Bailey, D.F.: Krasnoselski’s theorem on the real line. Am. Math. Mon. 81, 506–507 (1974)
3. Baxter, G., Joichi, J.T.: On functions that commute with full functions. Nieuw Arch. Wiskd. 3(XII), 12–18 (1964)
4. Bergweiler, W.: On the existence of fix points of composite meromorphic functions. Proc. Am. Math. Soc. 114, 879–880 (1992)
5. Boyce, W.M.: Commuting functions with no common fixed point. Trans. Am. Math. Soc. 137, 77–92 (1969)