J. Chambers and T. Hastie, Statistical Models in S Extended Model Formulas in R, 1992.

T. Coelli and A. Henningsen, frontier: Stochastic Frontier Analysis. R package version 0.996-6, URL http, 2010.

F. Cribari-neto and A. Zeileis, Beta Regression in R, Journal of Statistical Software, vol.34, issue.2, pp.1-24, 2010.

Y. Croissant, mlogit: Multinomial Logit Model. R package version 0.1-5, 2010.

Y. Croissant and G. Millo, Panel Data Econometrics in R: The plm Package, Journal of Statistical Software, vol.27, issue.2, pp.1-43, 2008.
URL : https://hal.archives-ouvertes.fr/halshs-00323950

T. Hothorn, K. Hornik, M. Van-de-wiel, and A. Zeileis, A Lego System for Conditional Inference, The American Statistician, vol.60, issue.3, pp.257-263, 2006.
DOI : 10.1198/000313006X118430

T. Hothorn, K. Hornik, M. Van-de-wiel, and A. Zeileis, Implementing a Class of Permutation Tests: The coin Package, Journal of Statistical Software, vol.28, issue.08, pp.1-23, 2008.

C. Kleiber and A. Zeileis, Applied Econometrics with R, 2008.
DOI : 10.1007/978-0-387-77318-6

R. Development and C. Team, R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, 2009.

G. Wilkinson and C. Rogers, Symbolic Description of Factorial Models for Analysis of Variance, Applied Statistics, vol.22, issue.3, pp.392-399, 1973.
DOI : 10.2307/2346786

A. Zeileis, T. Hothorn, and K. Hornik, Model-Based Recursive Partitioning, Journal of Computational and Graphical Statistics, vol.17, issue.2, pp.492-514, 2008.
DOI : 10.1198/106186008X319331

A. Zeileis, C. Kleiber, and S. Jackman, Regression Models for Count Data in R, Journal of Statistical Software, vol.27, issue.8, pp.1-25, 2008.