This looks interesting: http://www.amazon.com/Christian-Origins-Jonathan-Knight/dp/0567033511/ref=sr_1_9?s=books&ie=UTF8&qid=1350648269&sr=1-9It cites somewhat many sources. (Among which is 4 Ezra, on which there is a thread: http://community.logos.com/forums/p/48471/359282.aspx#359282)
If You wish to discuss the book, go to: A 2008 book on early Christianity (a bit dense)
I already have one title by Jonathan Knight which I like: 2 Peter and Jude
