Helmet safety: Inside the complicated equipment industry - Sports Illustrated
A former Harvard quarterback tackles NFL concussion woes
New NFL Helmet Cuts Quarterback Concussion Risk—But Only 7% Better Than Older Models
First QB helmet designed to help reduce concussions approved - WVUA 23
Alex Smith Is Wearing a New Helmet Designed to Reduce Concussions
NFL approves use of helmet designed to reduce concussions for quarterbacks
First QB helmet designed to help reduce concussions, Sports
What's with Anthony Richardson's helmet? New Axiom model making headway in Gators' locker room - The Athletic
NFL approves QB-Specific helmet to help quarterbacks keep their heads in game - Hindustan Times
First QB-specific helmet designed to help reduce concussions approved