1. Auger, P., (1925), J. Phys. Radium, 6, 205
2. Banbury, J. R., and Nixon, W. C., (1969), J. scient. Instrum., Ser. 2, 2, 1055; SEMS 475
3. Bergström, I., and Nordling, C., (1965), in Alpha-, Beta- and Gamma-Ray Spectroscopy, (ed. K. Siegbahn), North-Holland, Amsterdam, chapter 25
4. Booker, G. R., (1970), in Modern Dif fraction and Imaging Techniques in Materials Science, (eds S. Amelincx, R. Gevers, G. Remaut and J. van Landuyt) North-Holland, Amsterdam, 613–53
5. Broers, A. N., (1965), Microelectron. and Reliab., 4, 103