Partie 1 : http://www.dailymotion.com/YannLeChauve/video/x34ftd_de-gennes-24102003-partie-1_tech
Partie 3 : http://www.dailymotion.com/YannLeChauve/video/x34hik_de-gennes-24102003-partie-3_tech
Partie 4 (fin): http://www.dailymotion.com/YannLeChauve/video/x34hrc_de-gennes-24102003-partie-4_tech
