Stars:rotation Astrophysics 4 Bifurcation (mathematics) 4 Ionization 4 Mathematical models 4 Optical bistability 4 Parameter estimation 4 Radiation 4 Stars: early-type 4 Stars: mass-loss 4 Stars: rotation 4 Stars: winds, outflows 4 Stars:early-type 4 Stars:mass-loss 4 Stars:winds, outflows 4 Temperature measurement 4 Velocity measurement 4 Inverse problems 2 Maximum entropy methods 2 Methods: numericals 2 Methods:analytical 2 Methods:data analysis 2 Methods:numerical 2 Methods:statistical 2 Numerical methods 2 Stars 2 Stars:fundamental parameters 2 Velocity 2 Velocity distribution 2