SDSS J1553+0056: A BALQSO mimicking a Lyman-break galaxy I. Appenzeller, O. Stahl, C. Tapken, D. Mehlert and S. Noll A&A, 435 2 (2005) 465-469 Published online: 29 April 2005 DOI: 10.1051/0004-6361:20042524