Source: https://www.val-de-marne.gouv.fr/content/download/7173/50909/file/L%20HAY%20LES%20ROSES%20OUEST%20-%20Risque%20mouvements%20de%20terrain%20diff%C3%A9rentiels%20cons%C3%A9cutifs%20%C3%A0%20la%20s%C3%A9cheresse%20et%20%C3%A0%20la%20r%C3%A9hydratation%20des%20sols.pdf