1. H. Haas and D.A. Shirley, J. Chem. Phys. 58 (1973) 3339.
2. S.A. Lis, R.A. Naumann and G. Schmidt, Hyp. Int. 3 (1976) 445.
3. H. Frauenfelder and R.M. Steffen,Perturbed Augular Correlations, eds. K. Karlsson, E. Mathias and K. Siegbahn (North-Holland, Amsterdam, 1963).
4. S. Heinrich and K. Schubert, J. Less-Common Met. 57 (1978) P1.
5. P. Wodniecki, B. Wodniecka, M. Marszatek and A.Z. Hrynkiewicz, Proceedings of this conference, Hyp. Int. 78–80 (1993) 1027.