1. The World Health Report 2010. Health systems financing: the path to universal health coverage,2010
2. European Commission Expert panel on effective ways of investing in health. Access to health services in the European Union, September 2015. (Consultado el 8/11/2015.) Disponible en: http://ec.europa.eu/health/expert_panel/opinions/docs/010_access_healthcare_en.pdf.
3. El concepto y la medición de la accesibilidad;Frenk;Salud Pública Mex.,1985
4. The concepts and principles of equity in health;Whitehead;Int J Health Serv.,1992
5. Subjective unmet need and utilization of health care services in Canada: what are the equity implications;Allin;Soc Sci Med.,2010