@techreport{Black2006,
author = {Black, D. and Gates, G.J. and Sanders, S. and Taylor, L.},
title= {The measurement of same-sex unmarried partner couples in the 2000 U.S. census},
year = {2006},
URL = {http://www.ccpr.ucla.edu/ccprwpseries/ccpr_023_07.pdf},
publisher = {University of California: California Center for Population Research},
address = {Los Angeles},
number = {Working Paper CCPR-023-07},
}