The Proceedings of ICTMT 14 have been published online:

https://duepublico2.uni-due.de/receive/duepublico_mods_00048820

Please refer to:

Barzel, B., Bebernik, R., Göbel, L., Pohl, M., Ruchniewicz, H., Schacht, F., & Thurm, D. (Eds.). (2020). Proceedings of the 14th International Conference on Technology in Mathematics Teaching – ICTMT 14. Essen, Germany, 22nd to 25th of July 2019. Essen: Universität Duisburg-Essen. doi: 10.17185/duepublico/48820