TY - JOUR AU - Lescornel, Hélène AU - Loubes, Jean-Michel AU - Chabriac, Claudie TI - Unbiased risk estimation method for covariance estimation JO - ESAIM: Probability and Statistics PY - 2014 SP - 251 EP - 264 VL - 18 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ps/2013034/ DO - 10.1051/ps/2013034 LA - en ID - PS_2014__18__251_0 ER -