Chelsea continued their attack on Premier League referees after the club's official website published an article complaining that they have not been awarded enough penalties this season . The piece called 'penalty puzzle ' analysed how many spot-kicks the Blues have been given in each of the last five years . The argument , that the number is 'abnormally low ' , echoes manager Jose Mourinho 's view that there is a 'campaign ' against the club . Chelsea were angered last weekend by referee Mike Dean 's refusal to award Branislav Ivanovic a penalty . Referee Dean had some tough calls to make in Chelsea 's draw with Southampton but made most correctly . Chelsea have been awarded five penalties in eight Champions League games , including against PSG . The 'penalty puzzle ' article leads the way on Chelsea 's official website . At Old Trafford in October defenders John Terry and Branislav Ivanovic were denied a spot kick despite being wrestled to the ground . Former Barcelona midfielder Cesc Fabregas was tripped during Chelsea ’ s game against Southampton at St Mary ’ s Stadium , but instead he picked up a yellow card for diving . Jose Mourinho ’ s side appealed for a penalty against London rivals Tottenham Hotspur , only for the north London side to get away with handling the ball in their own box . A blocked arm again denied the current Premier League leaders at home to Burnley despite the shot being clearly stopped by a raised arm . Ivanovic was again left perplexed last Sunday at Stamford Bridge when visitors Southampton got away with yet another clear penalty against the Blues . The article , with no byline , comes after Branislav Ivanovic was denied a penalty in last weekend 's draw with Southampton , an incident the Chelsea website described as ' a clear spot-kick ' . However , general consensus , as outlined by Sportsmail 's Graham Poll , was that the contact on Ivanovic , while undoubtedly present , was too slight to spot with the naked eye . The article also notes that Chelsea have received five penalties in just eight Champions League games , which they cite as evidence that the 'campaign ' is limited to Premier League officials . Mourinho has been vociferous in his criticism of officials all season , first suggesting there was a campaign against his team in December , before appearing on Sky Sports last month after a challenge by Burnley 's Ashley Barnes on Nemanja Matic went unpunished . It is not the first time in recent weeks that the club 's online team have sought to back up their manager 's controversial view . Jose Mourinho first brought up the 'campaign ' against his side after a draw at Southampton in December . Mourinho 's players came under fire when nine of them surrounded referee Bjorn Kuipers against PSG . Click HERE to read what chief sports writer Martin Samuel had to say when he covered the subject in his colum last month . Last week the official Chelsea Instagram account posted historic pictures of Sportmail columnist Jamie Carragher and Graeme Souness arguing with referees , after Mourinho accused them of having short memories . Carragher had described the Chelsea players ' behaviour against PSG , when nine of them surrounded the referee , as 'disgraceful ' . Mourinho appeared on Sky Sports ' Goals on Sunday to discuss referees last month . Nemanja Matic ( centre ) was sent off after reacting to a challenge from Burnley 's Ashley Barnes last month .
Chelsea have been awarded seven penalties this season , two in the league . Club website points out discrepancy with previous years . Jose Mourinho has suggested there is a 'campaign ' against his team . Latest in series of controversial online posts by club . CLICK HERE for all the latest Chelsea news .