McCarthy, John (1985). «A "Tits-alternative" for subgroups of surface mapping class groups». Trans. Amer. Math. Soc. 291: 583–612. doi:10.1090/s0002-9947-1985-0800253-8
Cantat, Serge (2011). «Sur les groupes de transformations birationnelles des surfaces». Ann. Math. (em francês). 174: 299–340. doi:10.4007/annals.2011.174.1.8