Häfner, Leonard (2025): Conceptions of Democracy and Styles of Representation Among Legislators in the United States and Germany, Representation, DOI: 10.1080/00344893.2025.2514516.

Landwehr, Claudia; Crowder-Meyer, Melody; Häfner, Leonard; Stallbaum, Lea; Weingärtner, Paul (2024): American Legislator Survey 2023 (Datensatz). https://doi.org/10.7910/DVN/3H1YYH, Harvard Dataverse.

Häfner, Leonard; Landwehr, Claudia; Stallbaum, Lea (2023): German Legislators‘ Conceptions of Democracy and Process Preferences: Results from a New Survey. German Politics, 34(2), 277-302, DOI: 10.1080/09644008.2023.2279183.

Landwehr, Claudia; Häfner, Leonard; Stallbaum, Lea (2023): German Legislator Survey 2022 (Datensatz). https://doi.org/10.7910/DVN/GUVA5P, Harvard Dataverse.