@Book{, title = {L{\textquoteright}h{\'e}ritage scientifique de Poincar{\'e}}, author = {Charpentier, Eric and Ghys, Etienne and Lesne, Annick {\'e}diteurs}, year = {2006}, publisher = {{\'E}ditions Belin, Paris}, isbn = {978-2-7011-4332-3} }