I.-For contracts awarded in accordance with one of the formalised procedures listed in article R. 4122-4-15, the National Council publishes a contract notice in a newspaper authorised to carry legal advertisements and in a specialised newspaper corresponding to the economic sector concerned.
II.-For contracts awarded in accordance with an adapted procedure pursuant to article R. 4122-4-16, the National Council is free to choose the advertising methods best suited to the characteristics of the contract, in particular the value and nature of the supplies or services in question.
III – The National Council may publish an additional advertisement on a medium other than that chosen as the main medium. The additional advertisement may include only some of the information contained in the contract notice published on the principal basis in the medium of its choice, provided that it indicates the references.