%0 Journal Article %A Graffi, S. %A Grecchi, V. %A Silverstone, H. J. %T Resonances and convergence of perturbation theory for N-body atomic systems in external AC-electric field %J Annales de l'I.H.P. Physique théorique %D 1985 %P 215-234 %V 42 %N 3 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1985__42_3_215_0/ %G en %F AIHPA_1985__42_3_215_0