The purpose of this study is to estimate a residential water demand function in a dynamic framework for a panel of Italian municipalities and to calculate both short-run and long-run price elasticities. The Generalized Method of Moments (GMM) provides a suitable framework for obtaining...

This study further investigates the long-run impact of various sources of technological progress on productivity for a panel of 16 OECD countries during the period 1981 to 1998. Given the length of the series, the application of an heterogeneous estimator could be suitable from an econometric...