G. Birkhoff, Extension of Jentzsch's theorem, Trans. Amer. Math. Soc, vol.85, pp.219-227, 1957.

]. R. Bo and . Bowen, Equilibrium states and the ergodic theory of Anosov Diffeomorphisms, Lecture Notes in Math, vol.470, 1974.

G. Contreras, Regularity of topological and metric entropy of hyperbolic flows, Mathematische Zeitschrift, vol.57, issue.no. 10, pp.97-111, 1992.
DOI : 10.1007/BF02571785

Y. Derriennic, Marche al???atoire sur le groupe libre et fronti???re de Martin, Zeitschrift f???r Wahrscheinlichkeitstheorie und Verwandte Gebiete, vol.4, issue.4, pp.261-276, 1975.
DOI : 10.1007/BF00535840

Y. Derriennic, Quelques applications du théorème ergodique sousadditif, Astérisque, vol.74, pp.183-201, 1980.

Y. Derriennic and Y. , Guivarc'h, Théorème du renouvellement pour les groupes non-moyennables, C.R. Acad. Sci. Paris, Sér. A?B, pp.277-613, 1973.

L. Dubois, Projective metrics and contraction principles for complex cones, Journal of the London Mathematical Society, vol.79, issue.3, pp.79-719, 2009.
DOI : 10.1112/jlms/jdp008
URL : http://arxiv.org/abs/0811.2930

L. Dubois, An explicit Berry-Ess??en bound for uniformly expanding maps on the interval, Israel Journal of Mathematics, vol.7, issue.1
DOI : 10.1007/s11856-011-0137-y

E. B. Dynkin and M. B. Malyutov, Random walks on groups with a finite number of generators, Dokl. Akad. Nauk SSSR, vol.137, pp.1042-1045, 1961.

A. Erschler, On continuity of range, entropy and drift for random walks on groups, preprint. [EK] A. Erschler and V. A. Kaimanovich, Continuity of entropy for random walks on hyperbolic groups

]. H. Fu and . Furstenberg, Random walks and discrete subgroups of Lie groups, Advances Probab. Related Topics, vol.1, pp.1-63, 1971.

L. A. Gilch, Rate of escape of random walks on free products, Journal of the Australian Mathematical Society, vol.VII, issue.01, pp.31-54, 2007.
DOI : 10.1214/aop/1041903214
URL : https://hal.archives-ouvertes.fr/hal-01194658

L. A. Gilch, Asymptotic entropy of random walks on free products, preprint

H. Hennion, Dérivabilité du plus grand exposant caractéristique des produits de matrices aléatoires indépendantesindépendantesà coëfficients positifs, Ann. Inst. H. Poincaré, Probab Statist, vol.27, pp.27-59, 1991.

]. V. Ka and . Kaimanovich, The Poisson formula for groups with hyperbolic properties, Ann. Math, vol.152, pp.659-692, 2000.

. A. Kl, F. Karlsson, and . Ledrappier, Drift and entropy for random walks, Pure Appl, Math. Quarterly, vol.3, pp.1027-1036, 2007.

]. F. Le and . Ledrappier, Some Asymptotic properties of random walks on free groups, in Topics in Probability and Lie Groups, CRM Proceedings and Lecture Notes, pp.28-117, 2001.

J. Mairesse, Randomly growing braid on three strands and the manta ray, The Annals of Applied Probability, vol.17, issue.2, pp.502-536, 2007.
DOI : 10.1214/105051606000000754
URL : https://hal.archives-ouvertes.fr/hal-00164799

J. Mairesse and F. Mathéus, Random walks on free products of cyclic groups, Journal of the London Mathematical Society, vol.5, issue.6, pp.47-66, 2007.
DOI : 10.1112/jlms/jdl006
URL : https://hal.archives-ouvertes.fr/hal-00164804

Y. Peres, Domains of analytic continuation for the top Lyapunov exponent, Ann. Inst. H. Poincaré, Probab Statist, vol.28, pp.131-148, 1992.

D. Ruelle, Analyticity properties of the characteristic exponent of random matrix products, Advances in Math, vol.32, pp.69-80, 1979.

D. Ruelle, Repellers for real analytic maps, Ergodic Theory and Dynamical Systems, vol.84, issue.01, pp.99-107, 1982.
DOI : 10.1111/j.1749-6632.1980.tb29690.x

]. H. Ru and . Rugh, Cones and gauges in complex spaces: Spectral gaps and complex Perron-Frobenius theory, Ann. Math, vol.171, pp.1707-1752, 2010.