Barcelona have the chance to bury the ghosts of 2012 against Chelsea - Barca Blaugranes

Soccer360 Magazine Issue 97: March / April 2022 by Soccer 360 Magazine - Issuu

Chelsea vs Barcelona referee from previous Champions League clash reveals the fears for his safety - Mirror Online

FC Barcelona News: 14 July 2012; Preseason Set To Begin on Monday, Opponent in Morocco Friendly Announced - Barca Blaugranes

Chelsea have shot at revenge against Barcelona after 2009 Champions League semi-final refereeing controversy

On this day in 2009, Chelsea went out of the Champions League to Barcelona with a series of controversial calls from referee Tom Henning Øvrebø : r/soccer

Tom Henning Ovrebo admits Chelsea DID deserve a penalty in 2009 Champions League loss to Barcelona

Chelsea were horrible: Pedro recalls 'sad' memories of Barcelona's 2012 Champions League defeat - Mirror Online

Ref who screwed Chelsea against Barcelona admits pen errors - Daily Star

A forensic analysis of every referee mistake in Chelsea-Barcelona, 2009

Ovrebo: One Night of UCL Hell