Lost in Moderation: How Commercial Content Moderation APIs Over- and Under-Moderate Group-Targeted Hate Speech and Linguistic Variations. - David Hartmann; Amin Oueslati; Dimitri Staufer; Lena Pohlmann; Simon Munzert; Hendrik Heuer (CHI, 2025)

A systematic review of echo chamber research: comparative analysis of conceptualizations, operationalizations, and varying outcomes. - David Hartmann; Sonja Mei Wang; Lena Pohlmann; Bettina Berendt (J. Comput. Soc. Sci., 2025)