@techreport{UNPD2003,
author = {UNPD},
title= {World Population Prospects: The 2002 revision highlights},
year = {2003},
URL = {http://www.un.org/esa/population/publications/wpp2002/WPP2002-HIGHLIGHTSrev1.PDF},
publisher = {United Nations Population Division},
address = {New York},
number = {ESA/P/WP. 180},
}