Review

The Communications journal is fifty. The collection of the journal is a treasure that needs to be revisited given the subjects treated, the originality of the topics, and the personalities of the authors solicited. This anniversary volume presents a selection of eleven very interesting papers from previous issues on diverse themes which are still topical today. The papers of new authors proposing a rereading or furthering the discussion on the same topic are also published. The whole, dynamic and surprising, directly concerns the reader today and the intelligibility of the present.