The chromium spin density wave: magnetic X-ray scattering studies with polarisation analysis D. Mannix, P. C. de Camargo, C. Giles, A. J.A. de Oliveira, F. Yokaichiya and C. Vettier Eur. Phys. J. B, 20 1 (2001) 19-25 Published online: 15 March 2001 DOI: 10.1007/s100510170281