Our group has been doing code reviews forever, but recently we've had some debates about how to get the most from a code review. Questions have surfaced about who to assign as reviewers, what types of issues to raise in reviews and what not to raise, etc. So, I'm looking for a recommendation for a good book on code reviews. I know there are lots of opinions out there, so there are probably tons of books out there to sell those opinions. Any recommendations?
Also, we use Atlassian's Crucible for our reviews, but have found it lacking in just a few areas. Overall it's great compared to getting a meeting room and a projector or code printouts. Any suggestions on other web-based code review apps to consider?