The orbital modulation of the X-ray binary V Sagittae in the high and low statesV. Šimon, L. Hric, K. Petrík, S. Shugarov, P. Niarchos and V. I. MarsakovaA&A, 393 3 (2002) 921-925DOI: https://doi.org/10.1051/0004-6361:20021078
