The second Born approximation in electron-helium scattering in a Nd-YAG laser field D. Khalil, A. Makhoute, A. Maquet, G. Rahali and M. Zitane Eur. Phys. J. D, 41 2 (2007) 287-295 Published online: 15 November 2006 DOI: 10.1140/epjd/e2006-00249-1