Kislev, Elyakim. “Aging, Marital Status, and Loneliness: Multilevel Analyses of 30 Countries”. Research on Ageing and Social Policy 10, no. 1 (January 30, 2022): 77–103. Accessed May 3, 2024. https://www.hipatiapress.com/hpjournals/index.php/rasp/article/view/8923.