Pekeris Technique for 2-electron Atoms

["Richard P. Muller" <rpm at.at wag.caltech.edu>]

I'm currently working on 2-electron atoms using Pekeris' approach (see
 Phys Rev 112, 1649 (1958) and Phys Rev 115, 1216 (1959)). I believe that
 Equation 22 of the 1958 paper has an error in it, because the results
 don't agree with the special case results for the 7x7 case that Pekeris
 puts on the following page of that paper. I've checked my work several
 times, but there still appears to be something wrong.
 I looked for, but did not find, a published errata for this paper, which
 concerns me, since they've certainly had time to get a correction out,
 so I could be doing something dumb.
 Has anyone else worked through this paper? If so, could they offer me
 any help. Thanks very much in advance.
 Rick Muller