1. S. L. Chin, P. Lambropoulos (eds.): “Multiphoton Ionization of Atoms,” Academic Press, Toronto, Orlando, San Diego, 1984.
2. G. Leuchs and H. Walther in Ref. 1.
3. J. Kessler: “Polarized Electrons” Springer Verlag, Berlin, Heidelberg, New York, 1976.
4. G. Mainfray and C. Manus in Ref. 1.
5. Y. Gontier and M. Trahin in Ref. 1.