Kuosmanen, Timo; Kortelainen, Mika; Sipiläinen, Timo; … - In: European Journal of Operational Research 202 (2010) 2, pp. 584-594
We discuss the nonparametric approach to profit efficiency analysis at the firm and industry levels in the absence of complete price information. Two new insights are developed. First, we measure profit inefficiency in monetary terms using absolute shadow prices. Second, we evaluate all firms...