Interview and background-story: The man behind the success of Jean-Frédéric Dufour is none other than Jean-Claude Biver. – Watch-Insider.com
31. Jean-Frédéric Dufour - 2021 Formula 1 Power List - Paddock Magazine
Felix Leclerc-D'une Étoile a l'Autre: DUFOUR, Jean: 9782868081223: Amazon.com: Books
Les Portraits Du Fayoum" (Vol. 7)– Egy, Painting by Jean Dufour | Artmajeur
Breaking News: Jean-Frédéric Dufour CEO of Zenith Manufacture Departs. Appointed Today New CEO for Rolex SA Replacing Gian Riccardo Marini. — WATCH COLLECTING LIFESTYLE
Vandœuvre-lès-Nancy n écrologie. Décès de Jean Dufour