The initial-final mass relationship from white dwarfs in common proper motion pairs S. Catalán, J. Isern, E. García-Berro, I. Ribas, C. Allende Prieto and A. Z. Bonanos A&A, 477 1 (2008) 213-221 Published online: 06 November 2007 DOI: 10.1051/0004-6361:20078111