Laboratory Evaluation of Shell Add-On Products for American Football Helmets for Professional Linemen
Impact test comparisons of 20th and 21st century American football helmets in: Journal of Neurosurgery Volume 116 Issue 1 (2012) Journals
How a soft-shell helmet is limiting the risk of concussions at Rutgers football camp
Padded Helmet Shell Covers in American Football: A Comprehensive Laboratory Evaluation with Preliminary On-Field Findings
Padded helmet cover shows little protection for football players
Impact Sports - Cal Blitz Concussive Force-Reducing Football Helmet Outperforms Top-Rated Helmets in Independent Lab Testing
NFL looking to introduce new football helmets - Dawgs By Nature
Laboratory Evaluation of Shell Add-On Products for American Football Helmets for Professional Linemen
PDF) Preliminary Examination of Guardian Cap Head Impact Data Using Instrumented Mouthguards
Development and Multi-Scale Validation of a Finite Element Football Helmet Model
Headgear testing results during ball-to-forehead impacts.