1. Saneamento básico: competências constitucionais da União, Estados e Municípios;Barroso;Interesse Público,2002
2. Evaluating Health Impact; Water Supply, Sanitation, and Hygiene Education;Briscoe,1986
3. Private operation with public supervision: evidence of hybrid modes of governance in prisons;Cabral;Publ. Choice,2010
4. Environmental Health Engineering in the Tropics;Cairncross,1990
5. Some practical guidance for the implementation of propensity score matching;Caliendo;J. Econ. Surv.,2008