TY - GEN A1 - Kupka, Friedrich T1 - Improvements to the Short-Characteristics Method in 3D RHD Simulations and some Unsolved Problems in Spectral Line Shapes of A-type Stars KW - Convection KW - Radiative transfer KW - Methods: spectroscopy KW - Methods: numerical Y1 - ER - TY - GEN A1 - Kupka, Friedrich T1 - Improvements in Numerical and Analytical Modelling Techniques to Study the Solar Surface KW - Convection KW - Stars: Sun KW - Methods: numerical KW - Radiative transfer Y1 - ER -