Østgaard, N., T. Gjesteland, B. E. Carlson, A. B. Collier, S. Cummer, G. Lu, and H. J. Christian, First simultaneous observations of optical lightning and terrestrial gamma flash from space, Invited talk at the General Assembly and Scientific Symposium of International Union of Radio Science (URSI), August 17-23, 2014, Beijing, China
