Merge pull request #6 from dmurvihill/litreview

Merge initial lit review work
Merge pull request #7 from dmurvihill/litreview

add write-up for Schleimer03 and papers from its bibliography
Update bibliography with additional sources from Matt Heon

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
fix merge conflict in bibliography
merge Matt's changes per PR 7