1. Luna, T., Ribau, J., Figueiredo, D., Alves, R.: Improving energy efficiency in water supply systems with pump scheduling optimization. Journal of cleaner production 213, 342-356 (2019).
2. Coelho, B., Andrade-Campos, A.: Efficiency achievement in water supply systems-A review. Renewable and Sustainable Energy Reviews 30, 59-84 (2014).
3. Herrala, M. E., Huotari, H., Haapasalo, H. J. O.: Governance of Finnish waterworks – A DEA comparison of selected models. Utilities Policy 20(1), 64–70 (2012).
4. Charnes, A., Cooper, W. W., Rhodes, E.: Measuring the efficiency of decision-making units. European journal of operational research 2(6), 429-444 (1978).
5. Mahmoudi, M. J., Fathi, B., Sajadifar, H., Shahsavari, A.: Measuring efficiency of water and wastewater company: A DEA approach. Research Journal of Applied Sciences, Engineering and Technology 4(12), 1642–1648 (2012).