NYSportsJournalism.com - NFL Testing Approves First QB-Specific Helmet
Frontiers Finite element evaluation of an American football helmet featuring liquid shock absorbers for protecting against concussive and subconcussive head impacts
Chargers News: NFL, NFLPA approves first-ever position-specific helmets - Bolts From The Blue
NFL teams are using a new, safer helmet — the Vicis Zero1
Rio Vista commits to player safety with top-rated helmets, Sports
Football helmets have improved but are far from 'concussion proof' – Orange County Register
NFL, NFLPA Rank VICIS, Schutt, Riddell, Xenith Helmets in Top 10 of Lab Tests
Riddell Deploys Technology in Pursuit of Safer Head Protection
Vicis high-tech helmets take top 3 spots in NFL's annual performance ranking of equipment – GeekWire
More than 100 teams are covered in the Uni Watch 2017 college football preview - ESPN