Upon further review, NFL officiating is in 'decline'
Replay Assistance Rule NFL Football Operations
N.F.L. Will Experiment With Replay Reviews of Pass Interference - The New York Times
A star in stripes: NFL makes a historic hire with N.J. official
Has The NFL's Instant Replay Run Its Course?
Super Bowl 2020 referee, officials: Who is assigned to 49ers vs. Chiefs?
NFL Officials: Preparing for Success
Surface tablets for officiating reviews takes hold in NFL
NFL Replay Officials NFL Football Operations
NFL Officials: Preparing for Success
The NFL's vague rules, overzealous refs and gruesome violence have made pro football utterly unwatchable – New York Daily News
NFL Football Operations NFL Football Operations
NFL Rule Changes: Expanded replay on pass interference key topic - Sports Illustrated