Porembski M, K Breitenstein and P Alpar (2005). “Visualizing Efficiency and Reference Relations in Data Envelopment Analysis with an Application to the Branches of a German Bank.” JPA 23(2): 203-221.
Porembski M, K Breitenstein and P Alpar (2005). “Visualizing Efficiency and Reference Relations in Data Envelopment Analysis with an Application to the Branches of a German Bank.” JPA 23(2): 203-221.