Eckstein, B., K. Reusser, R. Stebler, and D. Mandel. “Implementation of Integrated Schooling in Compulsory Education: Analysis of Classroom teachers’ Beliefs and Optimism in the Canton of Zurich”. Swiss Journal of Educational Research, vol. 35, no. 1, Sept. 2018, pp. 91-112, doi:10.24452/sjer.35.1.4903.