Cooper WW, LM Seiford, E Thanassoulis and SH Zanakis (2004). ?DEA and its Uses in Different Countries.” EJOR 154(2): 337-344.
Cooper WW, LM Seiford, E Thanassoulis and SH Zanakis (2004). ?DEA and its Uses in Different Countries.” EJOR 154(2): 337-344.