J. Phys. B

de Jagher, P. C., Klewer, M., Beerlage, M. J. M., Los, J. H., & van der Wiel, M. J. (1977). Ion-pair formation in two-photon absorption of molecular caesium (563-635 nm). J. Phys. B: At., Mol. Opt. Phys., 10, 2809–2814.