S. Johansson, “Innovative Methods and Models of Collaboration in the Field of Pedagogical Prevention of Xenophobia, Anti-Semitism and Right-wing Extremism: Chances and Perspectives for a Better Cooperation between Formal and Non-formal Education in Germany”, STEPP, vol. 7, pp. 119–132, Jan. 2013, doi: 10.15388/STEPP.2013.0.1394.