References

1. J.M. Baptista, M.C. Almeida, P. Vieira, A. Moura e Silva, R. Ribeiro, R.M Fernando, A. Serafim, I. Alves and M.R. Cameira, Programa Nacional para o Uso eficiente da água. Versão Preliminar, Instituto de Água, Lisbon, Portugal, 2001, www.inag.pt [in Portuguese).
2. M.C. Almeida, J. Melo Baptista, P. Vieira, R. Ribeiro and A. Moura e Silva, Efficient use of water in Portugal: a national program. IWA, 4th World Water Congress, Marrakech, Morocco, 2004.
3. A. Lambert and W. Hirner, Losses from water supply systems: standard terminology and recommended performance measurements. IWA, 2000.
4. Prospectiva, Study of tariffs, Report P791, Prospecta–Projectos, Serviços, Estudo, Lda, Lisbon, 1999 [in Portuguese].
5. Prospectiva, Study of the residential consumption, by block structures, for the municipalites of the multi-municipal water supply system of Sotavento Algarvio, Report P835A, Prospecta– Projectos, Serviços, Estudo, Lda, Lisbon, 2000 [in Portuguese].