<ref>[http://link.springer.com/article/10.1353/dem.2006.0001],Andersson, Gunnar, et al. "The demographics of same-sex marriages in Norway and Sweden." Demography 43.1 (2006): 79-98.</ref> | <ref>[http://link.springer.com/article/10.1353/dem.2006.0001],Andersson, Gunnar, et al. "The demographics of same-sex marriages in Norway and Sweden." Demography 43.1 (2006): 79-98.</ref> |