1. Atnip, J., Sumi, H., Urbański, M.: The dynamics and geometry of semi–hyperbolic rational semigroups. arXiv:2004.13990 [math.DS]
2. Blokh, A., Cleveland, C., Misiurewicz, M.: Expanding Polymodials, in Modern Dynamical Systems and Applications, pp. 253–270. Cambridge University Press, Cambridge (2004)
3. Blokh, A., Cleveland, C., Misiurewicz, M.: Julia sets of expanding polymodials. Ergod. Theory Dyn. Syst. 25, 1691–1718 (2005)
4. Bonk, M., Meyer, D.: Expanding Thurston Maps, Mathematical Surveys and Monographs 225. American Mathematical Society, Providence (2017)
5. Lecture Notes in Mathematics;R Bowen,1975