Hajargasht, Gholamreza; Coelli, Tim; Rao, D.S. Prasada - In: Economics Letters 100 (2008) 2, pp. 185-188
A derivative-based measure of economies of scope is obtained by exploiting the duality between the shadow cost function and the input distance function. This is a useful measure when the econometric estimation of a cost function is not viable.
