Maziotis, Alexandros; Saal, David S.; Thanassoulis, Emmanuel - 2012
-specific (temporal) index number based profitability growth as a function of the profitability, productivity and price performance growth … that the steady decline in average price performance, gains in productivity and relatively stable economic profitability … after 2000, suggest that Ofwat is now more focused on passing productivity benefits to consumers, and maintaining stable …