Almohammad, Asaad; Holzgruber, Clemens (2021): Moral Dominance: Policing Minds, Spirits, Bodies, and Markets, ISIS Files, Program On Extremism, George Washington University, https://isisfiles.gwu.edu/report/zs25x847n.

Holzgruber, Clemens (2020): Pierre Vogel’s and Bilal Philips’s Criticisms of Jihadism. Journal of Muslims in Europe 9 (2), S. 150-174, https://brill.com/view/journals/jome/9/2/article-p150_2.xml.