Journal of Chemical Physics
Copyright (1980) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Chem. Phys. 73, 3514 (1980) and may be found at http://jcp.aip.org/resource/1/jcpsa6/v73/i7/p3514_s1.
P. Beckmann and A. Wendel, J. Chem. Phys. 73, 3514 (1980).