I'm not sure if this is the right place to post this, but I'll just post it anyways. This is super cool.
For anyone interested, heres the link to the primary article:

http://www.jneurosci.org/content/35/....full.pdf+html (Edit: hyperlink is working!)

It's more focused on the neurological basis of lucid dreaming, which I think is just as interesting as the psychological aspect.

Feel free to post any other interesting LD primary literature here. I'm on the lookout for anything interesting of that sort.