[1] AHLFORS L. V.: Complex Analysis. McGraw-Hill, Tokyo, 1966. MR 0510197 | Zbl 0154.31904

[2] BELYI G. V.: On Galois extensions of a maximal cyclotomic field. Izv. Akad. Nauk SSSR 43 (1979), 269-276 (Russian) [Math. USSR Izvestiya 14 (1980), 247-256 (English translation)]. MR 0534593 | Zbl 0409.12012

[3] BÉTRÉMA J.-PÉRÉ D.-ZVONKIN A.: Plane trees and their Shabat polynomials. Preprint, Bordeaux, 1992.

[4] BRYANT R. P.-SINGERMAN D.: Foundations of the theory of maps on surfaces with boundary. Quaгt. J. Math. Oxford Ser. (2) 36 (1985), 17-41. MR 0780347 | Zbl 0565.05026

[5] BIGGS N. L.-WHITE A. T.: Permutation Groups and Combinatorial Structures. London Math. Soc. Lecture Note Ser. 33, Cambridge Univ. Press, Cambridge, 1979. MR 0540889 | Zbl 0415.05002

[6] CORI R.: Un code pour les graphes planaires et ses applications. Astéгisque 27 (1975). MR 0404045 | Zbl 0313.05115

[7] CORI R.-MACHI A.: Maps, hypermaps and their automorphisms: a survey I, II, III, Exposition. Math. 10 (1992), 403-427, 429-447, 449-467. MR 1190182

[8] COUVEIGNES J.-M.: Calcul et rationalité de fonctions de Belyi en genre 0. Ann. Inst. Fourier (Grenoble) 44 (1994). MR 1262878 | Zbl 0791.11059

[9] COX D.: Introduction to Fermaťs Last Theorem. Amer. Math. Monthly 101 (1994), 3-14. MR 1252700

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

[11] DOUADY R.-DOUADY A.: Algebre et Théories Galoisiennes II. CEDIC/Fernand Nathan, Paris, 1979. MR 0595328

[12] GROTHENDIECK A.: Esquisse ďun programme. Preprint, Montpellier, 1984. MR 0556075

[13] HAMILTON W. R.: Letter to John T. Graves 'On the Icosian' (17th October 1856). In: Mathematical Papers, Vol. III, Algebra (H. Halberstam, R. E. Ingram, eds.), Cambridge University Press, Cambridge, 1967, pp. 612-625.

[14] HEFFTER L.: Über das Problem der Nachbargebiete. Math. Ann. 38 (1891), 477-508. MR 1510685

[15] HEFFTER L.: Über metacyklische Gruppen und Nachbarconfigurationen. Math. Ann. 50 (1898), 261-268. MR 1510996

[16] JACOBSON N.: Basic Algebra I, II. Freeman, San Fransisco, 1974, 1980. MR 0356989

[17] JONES G. A.: Graph imbeddings, groups, and Riemann surfaces. In: Algebraic Methods in Graph Theory, Szeged 1978 (L. Lovasz, V. T. Sos, eds.), North-Holland, Amsterdam, 1981, pp. 397-311. MR 0642049

[18] JONES G. A.: Congruence and non-congruence subgroups of the modular group. In: Groups, St. Andrews 1985 (E. F. Robertson, C M. Campbell, eds.), London Math. Soc. Lecture Note Ser. 121, Cambridge Univ. Press, Cambridge, 1986, pp. 223-234. MR 0896515

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

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

[21] JONES G. A.-SINGERMAN D.: Maps, hypermaps and triangle groups. In: The Grothendieck Theory of Dessins d'Enfants (L. Schneps, ed.), London Math. Soc. Lecture Note Ser. 200, Cambridge Univ. Press, Cambridge, 1994, pp. 115-145. MR 1305395 | Zbl 0833.20045

[22] JONES G. A.-SINGERMAN D.: Belyi functions, hypermaps and Galois groups. Bull. London Math. Soc. (To appear). MR 1405488 | Zbl 0853.14017

[23] JONES G. A.-STREIT M.-ZVONKIN A.: Plane trees and Galois groups. Preprint, Southampton, 1994.

[24] MALGOIRE J.-VOISIN C.: Cartes cellulaires. Cahiers Math. Montpellier 12 (1977). MR 0515642 | Zbl 0405.57003

[25] MALLE G.-SAXL J.-WEIGEL T.: Generators of classical groups. Geom. Dedicata 49 (1994), 85-116. MR 1261575

[26] MATZAT B. H.: Konstruktive Galoistheorie. Lecture Notes in Math. 1284, Springer-Verlag, Berlin, 1987. MR 1004467 | Zbl 0634.12011

[27] MAZUR B.: Number theory as gadfly. Amer. Math. Monthly 98 (1991), 593-610. MR 1121312 | Zbl 0764.11021

[28] REYSSAT E.: Quelques Aspects des Surfaces de Riemann. Birkhaüser, Boston-Basel-Berlin, 1989. MR 1034955 | Zbl 0689.30001

[29] RIBET K. A.: Wiles proves Taniyama's conjecture; Fermat's Last Theorem follows. Notices Amer. Math. Soc. 40 (1993), 575-576. MR 1228162 | Zbl 1194.11064

[30] SCHNEPS L.: Dessins d'enfants on the Riemann sphere. In: The Grothendieck Theory of Dessins d'Enfants (L. Schneps, ed.), London Math. Soc. Lecture Note Ser. 200, Cambridge Univ. Press, Cambridge, 1994, pp. 47-77. MR 1305393 | Zbl 0823.14017

[31] The Grothendieck Theory of Dessins d'Enfants. (L. Schneps, ed.), London Math. Soc. Lecture Note Ser. 200, Cambridge University Press, Cambridge, 1994. MR 1305390 | Zbl 0798.00001

[32] SERRE J.-P.: Topics in Galois Theory. Jones and Bartlett, Boston-London, 1992. MR 1162313 | Zbl 0746.12001

[33] SHABAT G. B.-VOEVODSKY V. A.: Drawing curves over number fields. In: Grothendieck Festschrift III (P. Cartier et al., eds.), Progr. Math. 88, Birkhauser, Basel, 1990, pp. 199-227. MR 1106916 | Zbl 0790.14026

[34] SHABAT G.-ZVONKIN A.: Plane trees and algebraic numbers. Preprint, Moscow and Bordeaux, 1993. MR 1310587

[35] SHAFAREVICH I. R.: Construction of fields of algebraic numbers with given solvable Galois group. Izv. Akad. Nauk. SSSR 18 (1954), 525-578 (Russian) [Amer. Math. Transl. 4 (1956), 185-237 (English translation)]. MR 0071469

[36] SINGERMAN D.: Automorphisms of maps, permutation groups and Riemann surfaces. Bull. London Math. Soc. 8 (1976), 65-68. MR 0393209 | Zbl 0322.20001

[37] SINGERMAN D.: Universal tessellations. Revista Mat. Univ. Complut. Madrid 1 (1988), 111-123. MR 0977044 | Zbl 0658.57004

[38] TUTTE W. T.: What is a map?. In: New Directions in Graph Theory (F. Harary, ed.), Academic Press, New York, 1973. MR 0376413 | Zbl 0258.05105

[39] VINCE A.: Combinatorial maps. J. Combin. Theory Ser. B 34 (1983), 1-21. MR 0701167 | Zbl 0514.05032

[40] WALSH T. R. S.: Hypermaps versus bipartite maps. J. Combin. Theory Ser. B 18 (1975), 155-163. MR 0360328 | Zbl 0302.05101

[41] WEIL A.: The field of definition of a variety. Amer. J. Math. 78 (1956), 509-524. MR 0082726 | Zbl 0072.16001

[42] WHITE A. T.: Graphs, Groups and Surfaces. North-Holland, Amsterdam, 1973. Zbl 0268.05102

[43] WOLFART J.: Mirror-invariant triangulations of Riemann surfaces, triangle groups and Grothendieck dessins: variations on a theme of Belyi. Preprint, Frankfurt, 1992.