There are no peer-reviewed papers that I know of, specificaly by Find-a-Drug. These are the only sort Keith and most scientests are bothered about.
Probably as Keith is more bothered about helping in the forums and doing the science than publicity
He also cannot/does not do articles for the likes of New Scientest, Scientific America ... due to the way they write their articles (or something like that).
There are Find-a-Drug's presentation papers that are (err where) presented at conferences and there's also an interview with Keith Davies at USALUG and Ars Technica (I'll get you these links as they're on my newsfeed near the beggining.)
The presentations I'll need to do some digging.