Strong field approximation within a Faddeev-like formalism for laser-matter interactionsYuri Popov, Alexander Galstyan, Francisca Mota-Furtado, Patrick F. O’Mahony and Bernard PirauxEur. Phys. J. D, 71 4 (2017) 93DOI: https://doi.org/10.1140/epjd/e2017-70708-7