Synchrotron radiation X-ray diffraction of modulated structures in charge-density-wave materials. Application to NbSe3 S. VAN SMAALEN, J.L. DE BOER et P. COPPENS J. Phys. IV France, 03 C2 (1993) C2-89-C2-96 DOI: 10.1051/jp4:1993218