Lyα emission in high-redshift galaxies C. Tapken, I. Appenzeller, S. Noll, S. Richling, J. Heidt, E. Meinköhn and D. Mehlert A&A, 467 1 (2007) 63-72 Published online: 27 February 2007 DOI: 10.1051/0004-6361:20065825