Some of us in the Paul and Scripture Seminar of the Society of Biblical Literature are developing an on-line wiki bibliography on Paul's use of Scripture. We're still working out the bugs but as of today the database includes 351 sources. Anyone can search it (using various criteria) but you need clearance to post entries. Those interested in helping to build the database should contact me by e-mail.
To poke around, click on Resources, then List. Feedback is most welcome.