The refereeing system is the following. The articles are distributed to the whole editors’ mailing list so that each one is able to read them and send his comments. The authors will receive anonymous reviewing. The Editors in Chief pick three readers for each article according to criteria of geographic and research field representativeness: one from the same geographical area discussed in the article, and working in the same field as the author (or as close as possible), the other one or two from different geographical areas and in different fields of study. The final evaluation takes account both of the readers’ opinion and of the opinion of those of the editors who choose to send in their comments.