Multi-frequency variations of the Wolf-Rayet system HD 193793 (WC7pd+O4-5) - III. IUE observationsD. Y. A. Setia Gunawan, K. A. van der Hucht, P. M. Williams, H. F. Henrichs, L. Kaper, D. J. Stickland and W. WamstekerA&A, 376 2 (2001) 460-475DOI: https://doi.org/10.1051/0004-6361:20010879