I do have a half-written tech report detailing how a cartel of miners could force a change in the rules; but that has become common (if still denied) knowledge by now, so it would probably be rejected for that (if not for ideologocal reasons).

I wrote a few other reports and analyses here on bitcointalk, but nothing deep enough to be worth submitting to a journal, unfortunately.

Bitcoin is not a good topic for scientific research, because results become obsolete very quickly, the object of study is a fundamentally flawed protocol, and there is almost complete lack of information about the bitcoin economy.  Even the most basic data -- like the number of users and the volume of e-payments -- has to be guessed, and the guesses vary by two orders of magnitude or more...