@techreport{United Nations Department of Economic and Social Affairs Population Division2014,
author = {United Nations Department of Economic and Social Affairs Population Division},
title= {World population prospects: The 2012 revision: Methodology of the United Nations Population Estimates and Projections},
year = {2014},
URL = {http://esa.un.org/unpd/wpp/Documentation/pdf/WPP2012_Methodology.pdf },
publisher = {Population Division, Department of Economic and Social Affairs, United Nations },
address = {New York},
number = {ESA/P/WP No. ESA/P/WP.235},
}