Presentation: How should we define terrestrial gamma-ray flashes?

Østgaard, N., M. Marisaldi, P. Kochkin, N. Lehtinen, A. Mezentsev, A. Skeltved, and K. Albrechtsen, How should we define terrestrial gamma-ray flashes?, EGU General Assembly, Vienna, Austria, April 2017, EGU2017-6511