Jovan Belcher lawsuit shows concussion deal didn't end NFL's problems
How Different Are Dogfighting and Football?
NFL Concussions: The 2012-13 Season In Review
Concussion Protocols and the NFL - HeinOnline Blog
NFL players union and Harvard team up on landmark study of football injuries and illness
N.F.L.'s Flawed Concussion Research and Ties to Tobacco Industry - The New York Times
Concussions are on the rise in the NFL: League releases data that shows 58% increase in regular season concussions – New York Daily News
The Dolphins failed Tua Tagovailoa. Will any change come of it?, NFL
N.F.L.'s Flawed Concussion Research and Ties to Tobacco Industry - The New York Times
A former Harvard quarterback tackles NFL concussion woes
The Brains In Football: Meet the doctors trying to solve NFL's CTE issue – New York Daily News