There's a lot of it out there due to industrial process safety and PDE research, and it's quite relevant to combustion and hybrid guns. I recently found this gem, which provides an excellent overview of the topic.
Other useful papers:
Initiation of Gaseous Detonations
Post anything interesting you find on the topic in here. If it's hidden behind a paywall, please either make it available through 4shared or similar, or don't bother posting it.
Gas Phase Detonation Literature
The Gas Explosion handbook has a chapter on detionation, as well as lots of useful info on deflagration type explosions: http://www.gexcon.com//handbook/GEXHBcontents.htm