Thyroff, J., J. Scheller, C. Schneider, and M. Waldis. “Civic Education at Lower Secondary Level. Manifestations and Challenges With the Example of Teaching Sequences on «Europe – EU – Switzerland»”. Swiss Journal of Educational Research, vol. 42, no. 1, June 2020, pp. 127-4, doi:10.24452/sjer.42.1.8.