I ran across this free kindle book that compiles the data on different sleep methods. Thought some people here might find it useful.

http://www.amazon.com/My-Child-Wont-Sleep-Sleep-Deprived-ebook/dp/B00NK5HFZK/ref=sr_sp-atf_title_1_3?ie=UTF8&qid=undefined&sr=8-3&keywords=sujay+kansagra&tag=viglink20929-20