Early and late time VLT spectroscopy of SN 2001el - progenitor constraints for a type Ia supernovaS. Mattila, P. Lundqvist, J. Sollerman, C. Kozma, E. Baron, C. Fransson, B. Leibundgut and K. NomotoA&A, 443 2 (2005) 649-662DOI: https://doi.org/10.1051/0004-6361:20052731
