https://www.xerficanal.com/economie/emission/Christian-Harbulot-Manipulations-sur-le-web-et-les-reseaux-sociaux-l-encerclement-cognitif_3747198.html,
https://www.xerficanal.com/economie/emission/Christian-Harbulot-Manipulations-sur-le-web-et-les-reseaux-sociaux-l-encerclement-cognitif_3747198.html,