1. S. Haroche in: “New Trends in Atomic Physics”, Proceedings of Les Houches Summer School, session XXXVIII, G. Grynberg and R. Stora editors, North Holland, Amsterdam (1982)
2. S. Haroche and J.M. Raimond in: Advances in Atomic and Molecular Physics, 20, 347 (1985)
3. J.A.C. Gallas, G. Leuchs, H. Walther and H. Figger in: Advances in Atomic and Molecular Physics, 20, 413 (1985)
4. T.F. Gallagher in: “Rydberg States of Atoms and Molecules”, R.F. Stebbins and F.B. Dunning editors, Cambridge Univ. Press, London and New York (1983)
5. P. Filipovicz, P. Meystre, G. Rempe and H. Walther in Optica Acta, published (1985)