Books on late stage tournament play

[electric2]

I am interested in any books (or chapters thereof) that address specifically, late stage No Limit (live) tournament strategy. I've watched a few of the last two tables of some majors, and must confess that some of the cards that get turned over just baffle me! I have read Sklanksy's Tournament book, but I don't feel that it addresses the psychology of most tournament players who are trying to get to the final table with superior chip position. (Of course, I'm looking for a little more depth than 'if you limp with aces, you won't get broke with aces.')

Any hidden gems out there?