Wolters-Noordhoff

Hopman, H. J., Matitti, T., & van Wakeren, J. H. A. (1969). Cyclotron harmonic instabilities in a beam-plasma experiment. In Contributions to the Third European Conference on Controlled Fusion and Plasma Physics and the Symposium on Beam-Plasma Interactions, Utrecht, The Netherlands, 23-27 June 1969.