Subsonic structure and optically thick winds from Wolf–Rayet stars L. Grassitelli, N. Langer, N. J. Grin, J. Mackey, J. M. Bestenlehner and G. Gräfener A&A, 614 (2018) A86 Published online: 19 June 2018 DOI: 10.1051/0004-6361/201731542