]. K. Bar01 and . Baranski, On realizability of branched coverings of the sphere, Topology and its Applications, vol.116, pp.279-291, 2001.

D. [. Duchi, G. Poulalhon, and . Schaeffer, Uniform random sampling of simple branched coverings of the sphere by itself, Proceedings of the Twenty-Fifth Annual ACM-SIAM, pp.294-304, 2014.
DOI : 10.1137/1.9781611973402.21

R. [. Edmonds, R. E. Kulkarni, and . Stong, Realizability of branched coverings of surfaces. Transactions of the, pp.773-790, 1984.

P. Flajolet and R. Sedgewick, Analytic Combinatorics, 2009.
DOI : 10.1017/CBO9780511801655

URL : https://hal.archives-ouvertes.fr/inria-00072739

]. S. Ger87 and . Gersten, On branched covers of the 2-sphere by the 2-sphere, Proceedings of the American Mathematical Society, pp.761-766, 1987.

P. Hall, On Representatives of Subsets, Journal of the London Math. Soc, vol.10, pp.26-30, 1935.

S. Koch and L. Tan, On balanced planar graphs, following W. Thurston. preprint, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01117927

]. K. Kur30 and . Kuratowski, Sur leprobì eme des courbes gauches en topologie, Fundamenta Mathematicae, vol.15, pp.271-283, 1930.

J. Tomasini, Géométrie combinatoire des fractions rationnelles, 2014.

W. T. Tutte, Graph theory. Encyclopedia of Mathematics and its Applications, 1984.

H. Zheng, Realizability of branched coverings of <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>S</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math>, Topology and its Applications, vol.153, issue.12, pp.2124-2134, 2006.
DOI : 10.1016/j.topol.2005.08.007