BZ Camelopardalis during its 1999/2000 optical low state J. Greiner, G. Tovmassian, M. Orio, H. Lehmann, V. Chavushyan, A. Rau, R. Schwarz, R. Casalegno and R.-D. Scholz A&A, 376 3 (2001) 1031-1038 Published online: 15 September 2001 DOI: 10.1051/0004-6361:20011048