1. Briggs D and M P Seah (eds),Practical Surface Analysis,1 and 2, 2nd edn, John Wiley & Sons, Chichester, 1990
2. Sharpe L H, JAdhesion,29, 1, 1989
3. Brewis D M, unpublished data
4. Briggs D, A Brown and J C Vickerman (eds),Handbook of Static Secondary Ion Mass Spectrometry, 50, John Wiley & Sons, Chichester, 1989
5. Briggs D,Surf Interface Anal,9, 391, 1986