1. W.H. Urbanus et al., in: T.I. Smith, H.A. Schwettman, R.L. Swent (Eds.), Proc. 16th Int. Conf. on Free Electron Lasers, Stanford, CA, USA, 1994.
2. A 130–260 GHz, 1 MW free electron maser for fusion
3. W.H. Urbanus et al., in: I. Ben-Zvi, S. Krinsky (Eds.), Proc. 17th Int. Conf. on Free Electron Lasers, New York, NY, USA, 1995.
4. Status, commissioning of the 1 MW, 130–260 GHz fusion-FEM
5. A.A. Varfolomeev et al., in: T.I. Smith, H.A. Schwettman, R.L. Swent (Eds.), Proc. 16th Int. Conf. on Free Electron Lasers, Stanford, CA, USA, 1994.