1887 20160701171655.0 10.1007/BF00982470 DOI ASTROimport-44 Runacres, M. 1994 The importance of continuum radiation for the stellar wind hydrodynamics of hot stars The contribution of bound-free and free-free processes to the outward acceleration of zeta Pup is studied and is found to be negligible. Blomme, R. Astrophysics and Space Science 216 1994 69-70 http://esoads.eso.org/abs/1994Ap%26SS.216...69R published in REFERD