[1] BESSIS L.: Atomorphismes d'hypercartes. Thèse, Université Paris 7 (1993).

[2] CORI R.-MACHI A.: Maps, hypermaps and their automorphisms: a survey III. Exposition. Math. 10 (1992), 449-467. MR 1190182 | Zbl 0772.05039

[3] CORN D.-SINGERMAN D.: Regular hypermaps. European J. Combin. 9 (1988), 337-351. MR 0950053 | Zbl 0665.57002

[4] COXETER H. S. M.-MOSER W. O. J.: Generators and Relations for Discrete Groups. Springer-Verlag, Berlin-Göttingen-Heidelberg-New York, 1965. MR 0174618 | Zbl 0133.28002

[5] FARKAS H. M.-KRA I.: Riemann Surfaces. Grad. Texts in Math., Springer-Verlag, Berlin-Göttingen-Heidelberg-New York, 1980. MR 0583745 | Zbl 0475.30001

[6] GROTHENDIECK A.: Esquisse ďun programme. Preprint, Montpellier 1984. MR 1780588

[7] HARVEY W. J.: Cyclic groups of automorphisms of a compact Riemann surface. Quart. J. Math. Oxford Ser. (2) 17 (1966), 86-97. MR 0201629 | Zbl 0156.08901

[8] JONES G. A.-SINGERMAN D.: Theory of maps on orientable surfaces. Proc. London Math. Soc. (3) 37 (1978), 273-307. MR 0505721 | Zbl 0391.05024

[9] JONES G. A.-SINGERMAN D.: Complex Functions, an Algebraic and Geometric Viewpoint. Cambridge University Press, Cambridge, 1987. MR 0890746 | Zbl 0608.30001

[10] MACLACHLAN C.: Smooth coverings of hyperelliptic surfaces. Quart. J. Math. Oxford Ser. (2) 22 (1971), 117-123. MR 0283194 | Zbl 0208.10101

[11] SINGERMAN D.: Finitely maximal Fuchsian groups. J. London Math. Soc. (2) 6 (1972), 29-38. MR 0322165 | Zbl 0251.20052