B. Bartlett, test(residus) Bartlett test of homogeneity of variances data: residus and donnee1$time Bartlett's K-squared = 18, pp.0-1391

M. Poursat and E. , Jolivet Statistique Théorique et Application Les sites internet: http://www.r-project.org/ cran.r-project.org/doc/contrib/Fox