Traumatic brain injury - Wikipedia
New football helmet test could help protect kids from concussions
This is what a brain injury feels like, Neuroscience
Army finds promise in durable material for future Soldier combat helmets, Article
This Helmet Will Save Football. Actually, Probably Not. - The New York Times
The Latest Research on Concussion May Lead to Improved Care
The future of football equipment? Measuring a hit's impact on the brain, not just the helmet - The Washington Post
Personalized helmets based on 3D scans could be the future of football
Worlds smartest bicycle helmet featuring 3D knitted liner unveiled in Germany - TCT Magazine