1. (a) and Metastable Ions, Elsevier, Amsterdam (1973): p. 53;
2. (b) and Metastable Ions, Elsevier, Amsterdam (1973): p. 40;
3. (c) and Metastable Ions, Elsevier, Amsterdam (1973): p. 60;
4. (d) and Metastable Ions, Elsevier, Amsterdam (1973): p. 130.
5. International;Cooks,1975