References
- Alegre , H. , Hirner , W. , Baptista , J. M. and Parena , R. 2000 . Performance Indicators for Water Supply Services , London : IWA Publishing .
- Ashley , R. and Hopkinson , P. 2002 . Sewer systems and performance indicators: into the 21st century . Urban Water , 4 : 123 – 135 .
- American Water Works Association Research Foundation . 1996 . Performance Benchmarking for Water Utilities , Denver, , USA : AWWARF .
- Burkhard , R. U. 2002 . Cost reducing measures for operation and maintenance (O&M) of pumping stations in the city of Zürich . Presented at the International Conference on Sewer Operation and Maintenance . November 26 – 28 2002 , Bradford, UK.
- Ertl , T. , Bogensberger , M. , Starkl , M. , Habich , J. , Haberl , R. , Murnig , F. and Sleytr , K. 2002 . An analysis of costs for operation and maintenance of sewerage systems in Austria . Presented at the International Conference on Sewer Operation and Maintenance . November 26 – 28 2002 , Bradford.
- Günthert , F. W. and Reicherter , E. 2001 . Investitionskosten der Abwasserentsorgung (Investment cost sof waste water disposal) , München : Oldenburg Industrieverlag .
- Kroiss , H. , Bogensberger , M. , Ertl , T. , Haberl , R. , Habich , J. , Lindtner , S. , Murnig , F. , Nowak , O. and Starkl , M. 2002 . Benchmarking in der Siedlungswasserwirtschaft (Benchmarking in municipal waste water management) . Österreichische Wasser- und Abfallwirtschaft , 5 – 6 : 87 – 97 .
- Parena , R. and Smeets , E. 2001 . Benchmarking initiatives in the water industry . Water Sci. Technol. , 44 : 103 – 110 .
- Reicherter , E. and Günthert , F. W. 1997 . Ein Modell zur Kostenschätzung für Abwasserkanalisationen . Korrespondenz Abwasser , 2 : 203 – 209 .
- Stemplewski , J. , Schulz , A. and Schön , J. 2001 . Benchmarking-an approach to efficiency enhancement in planning, construction and operation of wastewater treatment plants . Water Sci. Technol. , 44 : 111 – 117 .
- Wibbe , S. 1999 . Benchmarking in der Abwasserwirtschaft (Benchmarking in waste water management) . Korrespondenz Abwasser , 9 : 1432 – 1436 .