The orbital modulation of the X-ray binary V Sagittae in the high and low states V. Šimon, L. Hric, K. Petrík, S. Shugarov, P. Niarchos and V. I. Marsakova A&A, 393 3 (2002) 921-925 Published online: 01 October 2002 DOI: 10.1051/0004-6361:20021078