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Unobserved heterogeneous effects in the cost efficiency analysis of electricity distribution systems

Bibliographic reference Agrell, Per Joakim ; Farsi, Mehdi ; Filippini, Massimo ; Koller, Martin. Unobserved heterogeneous effects in the cost efficiency analysis of electricity distribution systems. CORE Discussion Paper ; 2013/3 (2013)
Permanent URL http://hdl.handle.net/2078.1/124765