1 E.L. Sibert, J.S. Hutchinson, J.T. Hynes, and W.P. Reinhardt, in (Springer Berlin Heidelberg, Berlin, Heidelberg, 1984), pp. 336–340.
1 E.L. Sibert, J.S. Hutchinson, W.P. Reinhardt, and J.T. Hynes, International Journal of Quantum Chemistry 22, (1982).