1. T. A. Cahill and J. Miranda, private communication, 1991.
2. PIXE: A Novel Technique for Elemental Analysis;Johansson,1988
3. XRFS and PIXE: Are they complementary or competitive techniques?
4. The Stopping and Range of Ions in Solids;Ziegler,1985
5. L-shell Coulomb ionization by heavy charged particles