The second Born approximation in electron-helium scattering in a Nd-YAG laser fieldD. Khalil, A. Makhoute, A. Maquet, G. Rahali and M. ZitaneEur. Phys. J. D, 41 2 (2007) 287-295DOI: https://doi.org/10.1140/epjd/e2006-00249-1