See the GEPAN objectives for 1978.
The repeated conclusion is that among the investigated UFO cases, enough cases have been found in which there are strong evidence allowing the conclusion that there exists a number of cases in which there are flying machines directed by an intelligence with preformances are far beyond anything conceivable in the current state of humain aeronautic technologies.
This interview of the SEPRA responsible Jean Jacques Velasco is an excellent way to introduce the work and conclusion of the SEPRA study.
This document explains the relations between the French "Gendarmerie Nationale" (a part of the French army who deals with civilian police missions. A Gendarmerie Nationale's official duty is to collect and transmit to the SEPRA scientific panel any testimony, proof, picture, related to the UFO phenomenon. Gendarmerie takes great care of this, they never mock anyone reporting a UFO!
The SEPRA sometimes release an annoucement for the press on the CNES web site when they start to study a case.
Open Letter to the sceptics, by Jean-Jacques Velasco, SEPRA director.
Pictures from the GEPAN and SEPRA files.
Sample intervention as newspaper reported it.