1. Proceedings of the ‘International Conference on Particle Induced X ray Emission and its Analytical Applications’, Lund, Sweden, 23–26 Aug. 1976, which will be published as a special volume of Nucl. Instr. Meth. (early 1977) — later referred to as Nucl. Instr. Meth. (PIXE)
2. F. Folkmann, J. Phys. E: SCi. Instr. 8, 429 (1975)
3. G. Deconninck, Nucl. Instr. Meth. (PIXE)
4. F.S. Goulding, Nucl. Instr. Meth. (PIXE)
5. G. Bertolini and G. Restelli, Atomic Inner Shell Processes, ed. B. Crasemann (Academic Press, New York, 1975 ) Vol. 2,p. 123