1. Matthias, E., Holliday, R.J.: Phys. Rev. Lett.17, 897 (1966)
2. Stone, N.J.: Proc. Int. Conf. on Hyperfine Interactions in Excited Nuclei, Rehovoth, eds. G. Goldring and R. Kalish, p. 237. New York: Gordon and Breach 1970
3. Cain, G.: Phys. Lett.38A, 279 (1972)
4. Blin-Stoyle, R.J., Grace, M.A.: Handbuch der Physik42, p. 555. Berlin-Göttingen-Heidelberg: Springer 1957
5. UK(I0,I,L)=(2I 0+1)(2I+1)1/2 W(I0I0II;K L) whereW is a Racah coefficient