%0 Journal Article %A Elisa Baldit %A Stephan Briaudeau %A Paul Monnier %A Kamel Bencheikh %A Ariel Levenson %T Light propagation in a solid doped with erbium ions: From ultraslow light to the superluminal regime %J Comptes Rendus. Physique %D 2009 %P 927-937 %V 10 %N 10 %I Elsevier %R 10.1016/j.crhy.2009.10.013 %G en %F CRPHYS_2009__10_10_927_0