Unfortunately, I am on spring break right now, so I don't have access to the journals. However, it' funny that you mention IPT, as it is my model of choice.
edit: Okay, I found something. Here is an article I found on healthyplace.com, a site dealing with depression. (
http://www.healthyplace.com/Communit...ch_vs_meds.asp ) The article is a bit too long to post here, but what is says is that for long term treatment where relapse and recurrance of symptoms is at stake, both therapies together seems to work out the best. It also examines short term dynammic approaches. You can check out the references in the article. I know this source isn't as good as a peer reviewd journal, but the info seems ligitimate enough, as it cites plenty of good articles.