B. , K. A. Janda, R. S. Virmont, J. Pellat, R. Mora et al., Waves and Instabilities in plasmas conference, Nucl. Fusion, vol.17, pp.4-7, 1977.

F. , E. Garban, C. Popovics, C. Poquerusse, A. Stenz et al., Plamsa Physics and Controlled Nuclear Fusion Research IAEA, pp.3-4, 1976.