American Institute of Physics
J.G. Alessi , A. Hershcovitch

de Graaf, M.J, Qing, Z, van Rooij, G.J, van de Sanden, M.C.M, Schram, D.C, Heeren, R.M.A, & Kleyn, A.W. (1994). Rotational and gas temperatures in a surface conversion negative ion source. In J.G Alessi & A Hershcovitch (Eds.), Production and Neutralization of Negative Ions and Beams : Sixth International Symposium, Upton, NY November 1992 (pp. 588–594). American Institute of Physics.