Football helmet with liquid padding may prevent concussions
This Helmet is Called “Zero1”— Could it be a TEN? - Mid-Atlantic Concussion Alliance
Padded Helmet Shell Covers in American Football: A Comprehensive Laboratory Evaluation with Preliminary On-Field Findings
PDF) Impact Test Comparisons of 20th and 21st Century American Football Helmets
PDF] Helmet efficacy against concussion and traumatic brain injury: a review.
High schools tackle football concussions after NFL lawsuit settlement
Frontiers An Overview of the Effectiveness of Bicycle Helmet Designs in Impact Testing
New helmet design can deal with sports' twists and turns