Radiography in high mass X-ray binaries - Micro-structure of the stellar wind through variability of the column densityI. El Mellah, V. Grinberg, J. O. Sundqvist, F. A. Driessen and M. A. LeuteneggerA&A, 643 (2020) A9DOI: https://doi.org/10.1051/0004-6361/202038791
