Vanden Eeckaut P, GD Ferrier and K Kerstens (1994). “Radial and Nonradial Technical Efficiency Measures on a DEA Reference Technology: A Comparison Using US Banking Data.” Recherches Economiques de Louvain 60(4): 449-479.

Vanden Eeckaut P, GD Ferrier and K Kerstens (1994). “Radial and Nonradial Technical Efficiency Measures on a DEA Reference Technology: A Comparison Using US Banking Data.” Recherches Economiques de Louvain 60(4): 449-479.

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