The formation of DA white dwarfs with thin hydrogen envelopes L. G. Althaus, M. M. Miller Bertolami, A. H. Córsico, E. García-Berro and P. Gil-Pons A&A, 440 1 (2005) L1-L4 Published online: 19 August 2005 DOI: 10.1051/0004-6361:200500159