NFL rule changes: Modified instant replay, more positions allowed to wear single-digit jerseys - The Washington Post
History of Instant Replay
History of Instant Replay
Behind-the-scenes with NFL sideline technology: Microsoft and Bose power team communication – GeekWire
On Further Review, the NFL's Instant Replay is Finally Instant
NFL Adopts New Rules, Bylaws For 2017 Season
The NFL has an instant replay camera problem
On Further Review, the NFL's Instant Replay is Finally Instant
The NFL's 3 changes under the hood of replay that could have mixed results – Football Zebras
NFL to add full-time officials in 2017 - Cincy Jungle
What you need to know about NFL's new rules for 2017 - ESPN - NFL Nation- ESPN