Radiation hydrodynamic simulations of massive star formation via gravitationally trapped H II regions: spherically symmetric ionized accretion flows - Lund, K.; Wood, K.; Gonçalves, Diego Antonio Falceta; Vandenbroucke, B.; Sartorio, N. S.; Bonnell, I. A.; Johnston, K. G.; Keto, E. (Royal Astronomical Society. Monthly Notices, 2019)