Mark Goodacre, and now also Holger Szesnat, are adding a very interesting list of book available on the Internet. Have a look for yourself here.
As I am especially looking for stuff about Philo on the net, I would like to also point your attention to a dissertation, which as far as I know- has not been published by a publisher yet, but is available here in its dissertation format:
Kenneth Allan Fox, “Paul’s Attitude toward the Body in Romans 6-8: Compared with Philo of Alexandria.” PhD diss. University of St. Michael’s College, 2001. http://hdl.handle.net/1807/10538