following images: File:Carte_de_la_distribution_relative_des_brittophones_par_Pays_en_Bretagne_historique_(2004).svg.png licensed with Cc-by-sa-3.0, GFDL
DescriptionCarte de la distributionrelativedesbrittophonesparPays (2004).png English: Linguistical map of the region of Bretagne, France, for statistic