A General Procedure to Recover the Marginal Products of a Cost Minimizing Firm

Inthis paper we develop a new method, based on generalized inverse,to recover the first derivatives of the production function.This allows us to retrieve returns to scale, technological progressand, in a dynamic setting, a measure of the adjustment cost.The method is general and systematic and it applies in caseswhere the traditional method does not. It is especially relevantwhen examining dynamic models or regulated firms. Copyright Kluwer Academic Publishers 2000