(1) : S. Liberman, J. Pinard, H.T. Duong, P. Juncar, J.L. Vialle, P. Jacquinot, G. Huber, F.Touchard, S. Büttgenbach, A. Pesnelle, C. Thibault and R. Klapisch and ISOLDE Coll., C.R. Acad. Sci., Fr., 1978, 286, 253-5.
(2) : J. Bauche, H.T. Duong, P. Juncar, S. Liberman, J. Pinard, A. Coc, C. Thibault, F. Büttgenbach, A.C. Mueller, A. Pesnelle and ISOLDE Coll., J. Phys. B, G.B., 1986, 19, L593-9.
(3) : H.T. Duong, P. Juncar, S. Liberman, A.C. Mueller, R. Neugart, E.W. Otten, B. Pense, J. Pinard, H.H. Stroke, C. Thibault, F. Touchard, J.L. Vialle, K. Wendt and ISOLDE Coll., Europhys. Lett., Fr, 1987, 3, 175-82.
(4) : E. Arnold, W. Borchers, M. Carré, H.T. Duong, P. Juncar, J. Lermé, S. Liberman, W. Neu, R. Neugart, E.W. Otten, M. Pellarin, A. Pesnelle, J. Pinard, J.L. Vialle, K. Wendt and ISOLDE Coll., J. Phys. B, G.B., 1989, 22, L391-9.
(5) : S.V. Andreev, V.I. Mishin and V.S. Letokhov, J. opt. Soc. Am. B, 1988, 5, 2190-8.