Nehlsen, I., Biene, J., Coester, M., Greuel, F., Milbradt, B., & Armborst, A. (2021). Evident and Effective? The Challenges, Potentials and Limitations of Evaluation Research on Preventing Violent Extremism. International Journal of Conflict and Violence (IJCV), 14, 1–20. https://doi.org/10.4119/ijcv-3801