Krivonozhko VE, OB Utkin, AV Volodin and IA Sablin (2005). “About the Structure of Boundary Points in DEA.” JORS 56(12): 1373-1378.

Krivonozhko VE, OB Utkin, AV Volodin and IA Sablin (2005). “About the Structure of Boundary Points in DEA.” JORS 56(12): 1373-1378.

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