Another 2 publications (you can view chunks of these online) -- both look good, but it would be great to have what they say about PCS subjected to some informed scrutiny :-)

Post-Concussion Syndrome: An Evidence-Based Approach by William D Boyd, 2014
(http://www.amazon.com/Post-Concussio.../dp/1499060866)

Brain Injury Medicine: Principles and Practice, 2nd edn, 2012, WD Zasler et al (http://www.demosmedical.com/brain-in...d-edition.html)