Hawk-Eye NFL Football Operations
How a Smart Endzone Camera Can Improve Your Football Program
History of Instant Replay
Play it again: NFL fans get 360-degree instant replay: Digital Photography Review
He Invented Instant Replay, The TV Trick We Now Take For Granted : The Two-Way : NPR
NFL will partner with Hawk-Eye to enhance instant replay capabilities and shorten delays
NFL review system puts ESPN, Fox, CBS and NBC in tough spot - Sports Illustrated
PLAY FAST & AGGRESSIVE WITH EDGE FOR SIDELINE INSTANT REPLAY
College football video replay review frustrating, inconsistent
He Invented Instant Replay, The TV Trick We Now Take For Granted : The Two-Way : NPR
A look at TV's instant replay through the years – The Denver Post
These four states will use instant replay in some high school football game this fall. Here's how they'll do it.
History of Instant Replay
Replay review in gridiron football - Wikipedia
Hawk-Eye NFL Football Operations