There is a lot of research done by top experts. You can read a lot of scholarly articles written by people like Kluft, Lowenstein, Ross, Putnam

Here's some scholarly articles.

http://scholar.google.com/scholar?hl..._ylo=&as_vis=1

There just bottom of the barrel stuff. Technical, even cold. For you I'd rec'd the DID Source book. It's a huge eye opener for people with DID. You can buy it on amazon.