Mutual insurance companies governed by this section must include in their articles of association and in all contractual or advertising documents relating to insurance or capitalisation the following words printed in uniform characters: “Société d’assurance mutuelle”, or, for the bodies referred to in Article L. 771-1 du code rural et de la pêche maritime: “Caisse d’assurance mutuelle agricole” or “Caisse de réassurance mutuelle agricole” supplemented, where appropriate, by the words: “à cotisations variables” when this contribution system is applied to member-policyholders.