THE DYNAMICAL STATE OF THE ATMOSPHERE OF THE SUPERGIANT ALPHA CYGNI (A2 Iae) DERIVED FROM HIGH-RESOLUTION ULTRAVIOLET SPECTRA B. BOER, C. de JAGER et H. NIEUWENHUIJZENJ. Phys. Colloques, 49 C1 (1988) C1-383-C1-386DOI: https://doi.org/10.1051/jphyscol:1988184