1. Carlson, T.A., Moddeman, W.E., Krause, M.O.: Phys. Rev. A1, 1406 (1970)
2. Krause, M.O.: J. Phys. (Paris)32, C4–67 (1971)
3. Krause, M.O.: Proceedings of the International Conference on Inner-Shell Ionization Phenomena and Future Applications, Atlanta 1972, Fink, R.W., Manson, S.T., Palms, J.M., Rao, P.V. (eds.), Report No Conf-720404, p. 1586ff. Oak Ridge: USEAK Technical Information Center 1973
4. Carlson, T.A., Nestor Jr., C.N.: Phys. Rev. A8, 1887 (1973)
5. Löw, W., Genz, H., Richter, A., Dyall, K.G.: Phys. Lett. 100A, 130 (1984)