1. J.M. Eisenberg and W. Greiner, Nuclear Theory Vol 1, Nuclear Models 3rd edition ( North-Holland, Amsterdam, 1987 )
2. P.O. Hess, Diploma Thesis, J.W. Goethe-Universität, Frankfurt/Main, Germany, 1978
3. P.O. Hess, PhD Thesis, J.W. Goethe-Universität, Frankfurt/Main, Germany 1980.
4. P.O. Hess, M. Seiwert, J. Maruhn, and W. Greiner Z. Physik A296 (1980) 147
5. E. Chacon and M. Moshinsky, J. Math. Phys., 17 No. 5 (1976) 668