Phase-dependent X-ray observations of the β Lyrae system - No eclipse in the soft band R. Ignace, L. M. Oskinova, W. L. Waldron, J. L. Hoffman and W.-R. Hamann A&A, 477 3 (2008) L37-L40 Published online: 04 December 2007 DOI: 10.1051/0004-6361:20078871