New helmet design can deal with sports' twists and turns
Find out how modern football helmets attempt to limit brain injuries
This Futuristic Helmet Is Designed to Protect Football Players From Brain Injury - Maxim
How New Helmet Technology Will Make the NFL and NHL Safer, News, Scores, Highlights, Stats, and Rumors
New Riddell SpeedFlex football helmet pits technology vs. concussions
Football helmets don't protect against concussion — and we're not sure what does
Impact sensors monitor for brain injury in sports and recreation helmets
League of Denial: The NFL, Concussions and the Battle for Truth: 9780770437541: Fainaru-Wada, Mark, Fainaru, Steve: Books
Find out how modern football helmets attempt to limit brain injuries
Report warned Riddell that no helmet could prevent concussions but NFL's helmet-maker marketed one as such anyway - ESPN
We Can Make Football Safer - Scientific American
A High-Tech Helmet Protects Football Players from Concussions - Seattle magazine