Joint research using small tokamaks - Gryaznevich, M P; Del Bosco, E; Malaquias, A; Mank, G; Van Oost, G; Yexi He; Hegazy, H; Hirose, A; Hron, M; Kuteev, B; Ludwing, G O; Nascimento, Ivan Cunha; et al. (Nuclear Fusion, 2005)