New replay rule makes for a smoother game – Football Zebras
Umpires to announce replay reviews to fans
Upon further review, NFL's replay system could remain intact - The Boston Globe
How instant replay impacts the psyche and performance of officials
For ACC and power conferences, off-site help on football replay reviews is now essential
NFL will partner with Hawk-Eye to enhance instant replay capabilities and shorten delays
Has The NFL's Instant Replay Run Its Course?
NFL Replay Rules Remain Problem For Officials
MLB finally ready to reap benefits of new replay digs
NFL owners vote no on replay review of roughing the passer
For ACC and power conferences, off-site help on football replay reviews is now essential
Replay Assistance Rule NFL Football Operations