Protective helmets make sports safer
Tackling Challenges in the NFL with Simulation
NFL at 100: Helmets go high tech in quest for player safety
Impact test comparisons of 20th and 21st century American football helmets in: Journal of Neurosurgery Volume 116 Issue 1 (2012) Journals
Helmet Innovation: More and Better Choices, Fewer Concussions
Helmet Innovation: More and Better Choices, Fewer Concussions
Denver-based tech start-up named a finalist in NFL Helmet Challenge
Xenith Unveils Shadow XR, a New Football Helmet Made With UK's Rheon
Digital Design, QBs Improving Football Helmet Safety
NFL Says Regular Season Concussions Rose 18%
Vicis high-tech helmets take top 3 spots in NFL's annual performance ranking of equipment – GeekWire
NFL, NFLPA approve new helmets for quarterbacks in latest step to combat concussions
Dr. Joshua Ryan Cleveland on LinkedIn: #innovation #testing #footballisabouttogetmuchsafer
2017 NFL Season - 10 Tech Innovations That Changed the NFL