Wustmann, Kathrin, and Yvonne Schleicher. “Is Research on Children’s Preconceptions a Suitable Issue for Students in Their Thesis? The Example of the Origin of Lake Constance Shows Results of a Student Evaluation in Primary Geography Education”. Journal of Geography Education, vol. 37, no. 2, June 2009, pp. 80-96, https://doi.org/10.60511/zgd.v37i2.201.