SOURCE SPORTS: NFL Announces New Quarterback Helmet to Reduce Concussion Risk - The Source
Examining a Safer Option for Football Helmets
New Riddell SpeedFlex football helmet pits technology vs. concussions
NFL, NFLPA approve new helmet that quarterbacks can wear to reduce concussions
Football Concussions: Prevention, Diagnosis & Recovery
Jeremy Repanich: Helmets alone won't save football from concussions - Sports Illustrated
Week 5 and 6: Composition of Helmets - BASIS Independent McLean
NFL Concussion Litigation Sideshow: The Battle Between Helmet Manufacturers
Doctors and a former NFL athlete talk about the risks and treatments of concussions
Football Turns to Helmet Technology to Tackle Head Injuries
Modern football helmets no better than 'leatherheads' at protecting against concussions, study finds
How football helmets fail to protect against some of the most dangerous hits in the game - The Verge
NOCSAE Finalizes First-Ever Football Helmet Standard to Address Concussion Risks from Rotational Forces and First Chest Protector Standard for Commotio Cordis – NOCSAE
We Can Make Football Safer - Scientific American
First QB helmet designed to help reduce concussions, Sports