NFL Instant Replay Process
Tech: A closer look at the NFL's instant replay camera work
Brutal instant replay shows how insufferable sports have become
The History of Instant Replay in the NFL – Benefit or Detriment??
The Rules of the Draft NFL Football Operations
History of Instant Replay
Forget the NFL catch rule. The league has a replay problem. - The Washington Post
Replay review in gridiron football - Wikipedia
Hurley: NFL Trying To Fix Instant Replay Problem By Not Addressing That Problem At All - CBS Boston
The History of Instant Replay in the NFL, News, Scores, Highlights, Stats, and Rumors
NFL Rules Compliance NFL Football Operations
The 5 O'Clock Club: How instant replay is killing the NFL - Hogs Haven
NFL will consider instant replay changes, but 'sky judge' remains unlikely - The Washington Post