Kaiser, G., Forgasz, H., Graven, M., Kuzniak, A., Simmt, E., & Xu, B. (2020). Invited Lectures from the 13th International Congress on Mathematical Education. Springer International Publishing.

Kaiser, Gabriele, Helen Forgasz, Mellony Graven, Alain Kuzniak, Elaine Simmt, et Binyan Xu. Invited Lectures From the 13th International Congress On Mathematical Education. Springer International Publishing, 2020.

Kaiser, Gabriele, et al. Invited Lectures From the 13th International Congress On Mathematical Education. Springer International Publishing, 2020.