The stellar content of the Hamburg/ESO survey - I. Automated selection of DA white dwarfs N. Christlieb, L. Wisotzki, D. Reimers, D. Homeier, D. Koester and U. Heber A&A, 366 3 (2001) 898-912 Published online: 15 February 2001 DOI: 10.1051/0004-6361:20000269