1. See e.g. Ziemba, F.P., Everhart, E.: Phys. Rev. Lett.2, 299 (1959)
2. Lorents, D.C., Aberth, W., Hesterman, V.W.: Phys. Rev. Lett.17 849 (1966); Smith, F.T., Marchi, R.P., Aberth, W., Lorents, D.C, Heinz, O.: Phys. Rev.161, 31 (1967); Coffey, D., Lorents, D.C., Smith, F.T.: Phys. Rev.187, 201 (1969); Smith, F.T., Fleischmann, H.H., Young, R.A.: Phys. Rev. A2, 379 (1970); Olson, R.E., Smith, F.T.: Phys. Rev. A3, 1607 (1971)
3. Hertel, I.V., Schmidt, H., Bahring, A., Meyer, E.: Rep. Prog. Phys.48, 375 (1985)
4. Campbell, E.E.B., Schmidt, H., Hertel, I.V.: Advances in chemical physics. Prigogine, I., Rice, S.A. (eds.), Vol. LXXII p. 37. 1988
5. Andersen, N., Gallagher, J.W., Hertel, I.V.: XIV ICPEAC, Palo Alto 1985. Book of invited papers Lorents, D.C., Meyerhof, W.E., Peterson, J.R. (eds.), p. 37. Amsterdam: North-Holland 1986