Nonhydrogenic Rydberg states in external fields as intermediate resonances in multiphoton ionization Back to all publications Publication date 1 January 1990 Reference L.D. Noordam, M.P. de Boer and H.B. van Linden van den Heuvell, Nonhydrogenic Rydberg states in external fields as intermediate resonances in multiphoton ionization, Phys. Rev. A 41, 6267-6270 (1990) Request this article