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
History of Instant Replay
On Further Review, the NFL's Instant Replay is Finally Instant
History of Instant Replay
NFL Instant Replay Process
The Top 25 Wide Receiver Debuts on New Teams in NFL History, News, Scores, Highlights, Stats, and Rumors
Should Corey Clement's catch in the back of the end zone in Super Bowl LII have been considered a touchdown after the video analysis? - Quora
Replay review in gridiron football - Wikipedia
The History of Instant Replay in the NFL – Benefit or Detriment??