The census of cataclysmic variables in the ROSAT Bright Survey A. D. Schwope, H. Brunner, D. Buckley, J. Greiner, K. v.d. Heyden, S. Neizvestny, S. Potter and R. Schwarz A&A, 396 3 (2002) 895-910 Published online: 05 December 2002 DOI: 10.1051/0004-6361:20021386