Study is here.
Key Quote:
"Since current odds hold that the Bush memos are faked, the question of their authenticity turns to whether CBS should have known they were inauthentic – if, in fact, they are. In fact, there seems to be nothing in the memos that indicates they are faked. All evidence points toward a mechanical production process and away from a digital process.
"Furthermore, the mechanical process seems to be consistent with typewriters used in the military at the time in question.
"If I had been one of the experts advising CBS, I would have advised them that there is nothing physical in the memos implying they are not authentic. All indicators imply they are authentic. I would have told them that from my point of view, the memos are worthy of presenting to the public."