[s.n.]

Heeren, R.M.A, Ciric, D, Meyler, D.B, Hopman, H.J, & Kleyn, A.W. (1991). Hydrogen and deuterium negative ion production in a hollow cathode based surface conversion source. In Production and Application of Light Negative Ions : Proceedings of the Fourth European Workshop The Queen's University of Belfast, 26th-28th March, 1991 (pp. 67–72). [s.n.].