Playing it safe: DWU football using protective padding on helmets - Mitchell Republic
Revolutionary new ZERO1 football helmet may help NFL players reduce concussions
NFL: Concussions dropped by more than 50% among players who wore Guardian Caps during summer
Athletic Trainer Mythbusters Myth #1: Concussion Prevention - The Center for Physical Rehabilitation
NFL players don Guardian Caps, designed to protect from concussion
New helmet design can deal with sports' twists and turns
New helmet design can deal with sports' twists and turns
Jeremy Repanich: Helmets alone won't save football from concussions - Sports Illustrated
Football Helmet Safety 101: How to Help Avoid Head Injuries Playing Football
This Helmet Will Save Football. Actually, Probably Not. - The New York Times
Concussion research: VR goggles and reinventing the helmet
MTSU reduces concussion risk with padded helmet covers