This paper compares the operational cost coverage index from 1132 water utilities for five countries (Albania, Brazil, Norway, Russia and Poland). The data used is available through the International Benchmarking Network (IBNET) for Water and Sanitation Utilities. By comparing means or medians...

A crucial aspect of empirical research is the stationarity properties of a time series. In this short chapter, we examine the effects of temporal aggregation on the power properties of the Augmented Dickey Fuller (ADF) stationarity test developed by Dickey, D.A. and W.A. Fuller, Journal of the...