1. Endt, P.M., Leun, C. van der: Nucl. Phys.A310, 1 (1978)
2. Nagel, A., Jones, G.D., Lornie, P.R.G., Nixon, M.R., Price, H.G., Twin, P.J.: J. Phys.G1, 324 (1975)
3. Alons, P.W.F., Blok, H.P., Van Hienen, J.F.A., Blok, J.: Nucl. Phys.A367, 41 (1981)
4. Blanpied, G.S., Hintz, N.M., Kyle, G.S., Franey, M.A., Seestrom-Morris, S.J., Owen, R.K., Palm, J.W., Dehnhard, D., Barlett, M.J., Harvey, C.J., Hoffmann, G.W., McGill, J.A., Liljestrand, R.P., Ray, L.: Phys. Rev.C25, 422 (1982)
5. Aspelund, O.: Phys. Lett.113B, 357 (1982)