found: L'image sans qualités: les beaux-arts et la critique à l'épreuve de la photographie, 1839-1859, c2006:t. p. (Paul-Louis Roubert)
found: LC Database, May 18, 2007(hdg: Roubert, Paul-Louis)
found: Wikipedia, viewed February 26, 2016(Paul-Luis Roubert; born 1967 in Reims; historian of French photography; associate researcher at Laboratoire d'histoire visuelle contemporaine; edited the bulletin of the Société française de photographie, 1999-2004 and president of the Société française de photographie since 2010)