1. ILGA World Database (ILGA World—The International Lesbian, Gay, Bisexual, Trans and Intersex Association, online since 2023, https://database.ilga.org, regularly updated; see in particular its Area 1.15: ‘Same-Sex Marriage and Civil Unions’, which builds on ILGA World’s annual State-Sponsored Homophobia reports, since 2007, https://ilga.org/state-sponsored-homophobia-report).
2. Kees Waaldijk et al (eds), The LawsAndFamilies Database—Aspects of Legal Family Formats for Same-Sex and Different-Sex Couples (INED 2017, http://www.lawsandfamilies.eu) (see in particular its section ‘Legal data in source papers’, https://www.lawsandfamilies.eu/en/legal-project/data, which contains papers about each of the 21 countries covered).
3. Marriage: A Human Right for All?;Sydney Law Review,2014