"Entreprise Gibec à Paris (75008)" [Company Gibec in Paris (75008)]. Figaro Entreprises (in French). 7 December 2020. Retrieved 3 January 2021. "Benoit Cheyrou". BFM Business (in French). NextInteractive. Retrieved 3 January 2021.
"Entreprise Gibec à Paris (75008)" [Company Gibec in Paris (75008)]. Figaro Entreprises (in French). 7 December 2020. Retrieved 3 January 2021. "Benoit Cheyrou". BFM Business (in French). NextInteractive. Retrieved 3 January 2021.