Control of electron-cyclotron instability driven by strong ECRH in open magnetic trap A. G. Shalashov, E. D. Gospodchikov, I. V. Izotov, D. A. Mansfeld, V. A. Skalyga and O. Tarvainen EPL, 124 3 (2018) 35001 Published online: 04 December 2018 DOI: 10.1209/0295-5075/124/35001