Xavier Chimits is a sports specialist and the author of various books on Formula 1, including Formula 1 Motor Racing Book and Schumacher, la legende. Bernard Cahier was the most well-known photographic reporter on Formula 1. His photography has been used in many photo essays, including Bernard Cahier: F-Stops, Pit Stops, Laughter and Tears and Formula 1: 1950-Today. Paul-Henri Cahier is the son of Bernard Cahier and a photographic reporter on Formula 1. He is a coauthor of Formula 1 2004: Photographic Season Review. They are all the coauthors of Grand Prix Racers: Portraits of Speed.