Epicier, T., J-C. Le Bossé, P. Perriat, S. Roux, and O. Tillement, 
"A strategy for simulating Electron Energy-Loss Near-Edge Structures of nanoparticles: application to size effects in Gd 2               O 3", 
The European Physical Journal Applied Physics, vol. 54, issue 3, pp. 33511, Jan-06-2011.