1. L. G. Christophorou (1978) Proc. XIIIth Int. Conf. on Phenomena in Ionized Gases, Berlin, GDR, Sept. 11-17, 1977, vol. II, pp. 51-72.
2. Atomic and Molecular Radiation Physics;Christophorou,1971
3. Dissociation ofH2+andHe−by Electric Fields
4. Negative Ions;Massey,1976