History of Instant Replay
NFL's instant replay officials have new powers, but owners weren't interested in other major rules changes - The Boston Globe
On Further Review, the NFL's Instant Replay is Finally Instant
Tackling Tech: An Inside Look at NFL Instant Replay for 2017
If NFL truly cares about players, only course of action is to cancel game in wake of Damar Hamlin injury
NFL Quarterback Club 99 - Nintendo 64 : Video Games
Using Instant Replay to Challenge a Call in American Football - dummies
Instant Replay: Kyle Van Noy Hits First-Ever Golf Hole-In-One
Instant replay review FAQ