Marisaldi, M. Galli, C. Labanti, N. Østgaard, D. Sarria, S.A. Cummer, F. Lyu, A. Lindanger, R. Campana, A. Ursi, M. Tavani, F. Fuschino, A. Argan, A. Trois, C. Pittori and F. Verrecchia, A solution to the eight year-long controversy on the high-energy spectral component of Terrestrial Gamma-ray Flashes, AGU Fall Meeting, San Francisco, 9-13 December, 2019