Gemini spectroscopy of supernovae from the supernova legacy survey: Improving high-redshift supernova selection and classification - Howell, D; Sullivan, M; Perrett, K; Bronder, T; Hook, I; Astier, P; Aubourg, E; Balam, D; Basa, S; Carlberg, R; Fabbro, S; Fouchez, D; et al. (2005)