NCAA teams test a new football helmet in a quest to prevent concussions - The Globe and Mail
Revolutionary new ZERO1 football helmet already in play, said to help dramatically reduce concussions
Padded Helmet Shell Covers in American Football: A Comprehensive Laboratory Evaluation with Preliminary On-Field Findings
NFL helmet manufacturers hope to reduce concussions, save game - Washington Times
NFL at 100: Helmets go high tech in quest for player safety
Unprecedented Rate Of Improvement Stimulated In Helmet Industry, New Standard Set For 'Top-Performing' Helmet Models Worn By NFL Players
NFL at 100: Helmets go high tech in quest for player safety
Research First Line of Defense as NFL Moves to Improve Player Safety
GUARDIAN CAP DEBUTS AT TRAINING CAMPS LEAGUE-WIDE