Source: https://www.iledefrance-mobilites.fr/wp-content/uploads/2017/04/Deliberation_no2011-0589_relative_a_la_convention_de_delegation_de_competence_pour_les_transports_scolaires_du_SI-Arthies_Bathelu_Clery_en_Vexin_Wy_Dit_Joly_Village.pdf