http://www.informaworld.com/smpp/content~db=all~content=a757423
The inelastic scattering matrix element and its application to electron
energy loss spectroscopy
Philosophical Magazine A
Volume 47, Issue 1, 1983, Pages 119 - 130
Authors: V. W. Maslena; C. J. Rossouwa
DOI: 10.1080/01418618308243112
email: h**[email protected]