Timo Kuosmanen Wageningen University   WU - Environmental Economics and Natural Resources P.O.Box 8130 Wageningen, 6700EW The Netherlands   Timo.Kuosmanen@alg.SHHK.WAU.NL     Biographical Sketch: Some recent papers: "What is the Economic Meaning of FDH?", Journal of Productivity Analysis 2000, 13(3), 259-263 (with L. Cherchye and G. T. Post). "DEA with Efficiency Classification Preserving Conditional Convexity", European Journal of Operational Research 2001, 132(2), 326-342. "Alternative Treatments of Congestion in DEA", European Journal of Operational Research 2001, 132(1), 75-80 (with L. Cherchye and G. T. Post). "FDH Directional Distance Functions: With an Application to European Commercial Banks", Journal of Productivity Analysis 15, 201-215 (with L. Cherchye and G. T. Post). "Measuring Economic Efficiency With Incomplete Price Information: With an Application to European Commercial Banks", European Journal of Operational Research 2001, 134(1), 43-58 (with G. T. Post).       JEL Areas: C0 : Mathematical and Quantitative Methods: General D2 : Production and Organizations: General