Rossel, Cecilia; González de Reufels, Delia; Nullmeier, Frank, 2025: Social Security of State Employees. Historical Developments Around the World, Cham: Palgrave Macmillan, (forthcoming)

Nullmeier, Frank, 2021: Kausale Mechanismen und Process Tracing. Perspektiven der qualitativen Politikforschung, Frankfurt a.M., New York: Campus, Download PDF, Link (Date: 10.09.2021)

Nullmeier, Frank; González de Reufels, Delia; Obinger, Herbert (Ed.), 2022: International Impacts on Social Policy. Short Histories in Global Perspective, Global Dynamics of Social Policy, Cham: Palgrave Macmillan, doi:10.1007/978-3-030-86645-7

Kuhlmann, Johanna; Nullmeier, Frank (Ed.), 2022: Causal Mechanisms in the Global Development of Social Policies, Global Dynamics of Social Policy, Cham: Palgrave Macmillan, doi:10.1007/978-3-030-91088-4

Blum, Sonja; Kuhlmann, Johanna; Schubert, Klaus (Ed.), 2020: Routledge Handbook of European Welfare Systems, London/New York: Routledge

Churchill, Harry; González de Reufels, Delia, 2025: The Sugar Industry and Social Policy in Jujuy, Argentina, during the 1930s, in: Journal of Latin American Studies, (forthcoming)

Öktem, Kerem Gabriel, 2024: Changing patterns of inclusion into old age protection in the Ottoman Empire and the Republic of Turkey (1865–2020), in: Middle Eastern Studies, doi:10.1080/00263206.2024.2389878, Download PDF

Szikra, Dorottya; Öktem, Kerem Gabriel, 2023: An illiberal welfare state emerging? Welfare efforts and trajectories under democratic backsliding in Hungary and Turkey , in: Journal of European Social Policy, 33 (2), pp. 201 - 215, doi:10.1177/09589287221141365, Download PDF

Kuhlmann, Johanna; Vogeler, Colette, 2021: United against precarious working conditions? Explaining the role of trade unions in improving migrants’ working conditions in the British and German meat-processing industries, in: Journal of Public Policy, 41 (3), pp. 515 - 531, doi:10.1017/S0143814X20000112

Bolukbasi, H. Tolga; Öktem, Kerem Gabriel; Savaş, Efe, 2021: Measuring welfare states beyond the three worlds: Refining state‐of‐the‐art tools, in: Social Policy & Administration, online first, doi:10.1111/spol.12708