@inbook {4607, title = {Les premiers photographes des Ballets russes {\`a} Paris : Auguste Bert et Charles Gerschel}, booktitle = {Les Ballets russes : [exposition, Paris, Biblioth{\`e}que-mus{\'e}e de l{\textquoteright}Op{\'e}ra, du 24 novembre 2009 au 23 mai 2010]}, year = {2009}, pages = {129-136}, publisher = {Gourcuff Gradenigo}, organization = {Gourcuff Gradenigo}, address = {Montreuil}, author = {Cristina Barbero} }