 For example, the study of Léonce Perret did not exist until 2003, but it was not definitive.Entitled "Léonce Perret", the biography was published by the French Association for Historical Film Studies in collaboration with the Bologne Film Library under the direction of Bernard Bastide and Jean A. Gili.In 2006, Daniel Taillé published a more thorough work giving homage to such a pioneering artist.