Abdulghani Hasan,                                                                    Petter Pilesjö,                                                                    Andreas Persson                                                            
                                                
                        Abstract  996 |
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                                                                                                                                        | DOI 
                            
                                https://doi.org/10.3846/20296991.2012.702983
                            
                                                                            
                                
                                Page 57-69
                            
                        
                                            
                                         
                                    
 
  