Ghost(re)written?

Although I haven't seen anything on this point on Wikipedia itself, there have been various claims over the years that the novel was "completed" (i.e., the first draft rewritten) by one or more unseen hands.  I realize that this is a pretty radical thing to claim and will not repeat those sources here, but does anyone in Wikipedialand have any reputable sources for or against such claims?  I will confess candidly that one of the things that makes me feel tere is at least some ground for this is the obvious "rehashing" of plot elements of other James Bonds novels in the story:

 the holding of a meeting with representatives of various crime syndicates, one of whom does not agree with the plan of the main villain and as a result is immediately liquidated (Goldfinger)

 the "Western" affectations, including the construction of an "Old West Railroad", by the main villain (Diamonds are Forever)

I'm sure other such obvious parallels can be found.    

1. In future, please post new threads at the bottom of the page, rather than part way through.
2. Try reading the article: the "Background" section covers the myth of the "re-writing".
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