By Førsund Finn R.   Hjalmarsson Lennart   in Journal of Productivity Analysis

ISSN:0895-562X|21|1|25-48

Springer Publishing Company ‎(2004)‎

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By Førsund Finn R.   Zanola Roberto   in Applied Economics

ISSN:1466-4283|38|12|1425-1434

Routledge Ltd‎(2006)‎

Access to resources Favorite 18.037525