Discovery of a peculiar DQ white dwarf D. Carollo, S. T. Hodgkin, A. Spagna, R. L. Smart, M. G. Lattanzi, B. J. McLean and D. J. Pinfield A&A, 393 3 (2002) L45-L48 Published online: 01 October 2002 DOI: 10.1051/0004-6361:20021130