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F?re R and S Grosskopf (2004). “Modeling Undesirable Factors in Efficiency Evaluation: Comment.” EJOR 157(1): 242-245.

F?re R and S Grosskopf (2006). “Resolving a Strange Case of Efficiency.” JORS 57(11): 1366-1368.

F?re R and S Grosskopf (2006). “Resolving a Strange Case of Efficiency.” JORS 57(11): 1366-1368.

F?re R and S Grosskopf (1994). Cost and Revenue Constrained Production. New York, USA, Sprin-Verlag.

F?re R and S Grosskopf (1994). Cost and Revenue Constrained Production. New York, USA, Sprin-Verlag.

F?re R (1987). “Surface Mining of Coal: Efficiency of US Interior Mines.” Appl Econ 19: 1665-1673.

F?re R (1987). “Surface Mining of Coal: Efficiency of US Interior Mines.” Appl Econ 19: 1665-1673.

F?re R and S Grosskopf (1994). “Estimation of Returns to Scale Using Data Envelopment Analysis: A Comment.” EJOR 79(2): 379-382.

F?re R and S Grosskopf (1994). “Estimation of Returns to Scale Using Data Envelopment Analysis: A Comment.” EJOR 79(2): 379-382.

F?re R (1988). “Efficiency Gains from Addition of Technologies: A Nonparametric Approach.” in Eichhorn W (eds.) Measurement in Economics 20, Physics-Verlag: 171-176.

F?re R (1988). “Efficiency Gains from Addition of Technologies: A Nonparametric Approach.” in Eichhorn W (eds.) Measurement in Economics 20, Physics-Verlag: 171-176.

F?re R and S Grosskopf (1994). “Estimation of Returns to Scale Using Data Envelopment Analysis: A Comment. Scandinavian J Economics.” Scandinavian J Economics 7: 379-382.

F?re R and S Grosskopf (1994). “Estimation of Returns to Scale Using Data Envelopment Analysis: A Comment. Scandinavian J Economics.” Scandinavian J Economics 7: 379-382.

F?re R (1991). “Book Review – Efficiency Analysis by Production Frontiers – the Nonparametricapproach – Sengupta, J K.” J Economics-Zeitschrift Fur Nationalokonomie 5: 84-84.

F?re R (1991). “Book Review – Efficiency Analysis by Production Frontiers – the Nonparametricapproach – Sengupta, J K.” J Economics-Zeitschrift Fur Nationalokonomie 5: 84-84.

F?re R (1993). “Industrial-Efficiency in 6 Nations.” Economic Record 6: 217-219.

F?re R (1993). “Industrial-Efficiency in 6 Nations.” Economic Record 6: 217-219.

F?re R (1995). “Comments on “Incentives and Productivity Measures”.” Int J Prod Econ 39(1/2): 80-80.

F?re R (1995). “Comments on “Incentives and Productivity Measures”.” Int J Prod Econ 39(1/2): 80-80.