Negative ion surface-plasma source development for fusion in Novosibirsk Yu. I. Belchenko, G.I. Dimov, V.G. Dudnikov et A.S. Kupriyanov Rev. Phys. Appl. (Paris), 23 11 (1988) 1847-1857 DOI: 10.1051/rphysap:0198800230110184700