,  Marjan  Damankeshideh 
  
,  Manijeh  Hadinejad 
  
,  Qolamreza  Geraeinejad 
  
,  Hooshang  Momeni Vesalian 
  
                
                        The Impact of Economic Sanctions and Political Relations with Emphasis on Earnings and Tax Gaps: A Test of Political Economy Theory