Needs of reliable nuclear data and covariance matrices for Burnup Credit in JEFF-3 library A. Chambon, A. Santamarina, C. Riffard, F. Lavaud and D. Lecarpentier EPJ Web of Conferences, 42 (2013) 03001 Published online: 18 March 2013 DOI: 10.1051/epjconf/20134203001