➼ The types of publication rank according to the categorization which prevails today in the French National Centre For Scientific Research. This classification indicates normally in a lessening order the importance and the quality of the publications. The reality is a little different. Some research reports can be more important than articles, and leading articles in La lettre du GERPISA more than contribution in collective book. The type of publication depend often on time and circumstances. Entries by " research question " and by " element of a social relationships theorization " are more relevant to know the place and the contribution of every publication. The classification by type keeps however an interest, for example to find physically the texts.