Replay review in gridiron football - Wikipedia
History of Instant Replay
Tech: A closer look at the NFL's instant replay camera work
NFL admits mistake on Percy Harvin's touchdown
Instant Replay: The Green Bay Diary of Jerry Kramer: Kramer, Jerry
On Further Review, the NFL's Instant Replay is Finally Instant
Upon Further Review: The NFL's Replay Review — Review Party Dot Com
NFL refs and instant replay are destroying the league
On Further Review, the NFL's Instant Replay is Finally Instant
NFL admits to breakdown in instant replay process