1. World Health Organization (2010) World health report: health systems financing: the path to universal coverage. Geneva: World Health Organization.
2. Brearly L, Marten R, O'Connell T (2013) Universal health coverage: a commitment to close the gap. New York: Rockefeller Foundation, Save the Children, the United Nations Children's Fund (UNICEF) and the World Health Organization.
3. Vega J (2013) Universal health coverage: the post-2015 development agenda. New York: Rockefeller Foundation.
4. Evans D, Saksena P, Elovainio R, Boerma T (2012) Measuring progress towards universal coverage. Working paper. Geneva: World Health Organization.
5. World Health Organization (2012) Measurement of trends and equity in coverage of health interventions in the context of universal health coverage. Unpublished workshop summary report; September 17–21, 2012; Bellagio, Italy.