Generation of rogue waves in gyrotrons with high excess over the thresholdI.V. Zotova, N.S. Ginzburg, M.V. Morozkin, R.M. Rozental, A.S. Sergeev, A.E. Fedotov and V.P. TarakanovEPJ Web Conf., 149 (2017) 04006DOI: https://doi.org/10.1051/epjconf/201714904006