title: Assortative matching among same-sex and different-sex couples in the United States, 1990-2000.
authors.affiliation: Department of Sociology, University of Wisconsin-Madison, 1180 Observatory Drive, Madison, WI 53706.
authors.forename: Christine R
authors.initials: CR
authors.lastname: Schwartz
authors.forename: Nikki L
authors.initials: NL
authors.lastname: Graf