Phase-resolved X-ray and optical spectroscopy of the massive binary HD 93403 G. Rauw, J.-M. Vreux, I. R. Stevens, E. Gosset, H. Sana, C. Jamar and K. O. Mason A&A, 388 2 (2002) 552-562 Published online: 31 May 2002 DOI: 10.1051/0004-6361:20020523