The paper describing Epidexipteryx was published in 2008 in Nature by Zhang et al. Rather than addressing the dinosaur as a paravian theropod the authors set out to describe what they called a new "bizarre Jurassic maniraptoran". To sum it up, Nature released a short news release that is available to the public. The article is a good read, but it is more regulated in its access. Reading the press release is a good substitute, so be sure to at least check this out!