Mehringer, H., G. Fraga-González, G. Pleisch, M. Röthlisberger, F. Aepli, V. Keller, I. I. Karipidis, and S. Brem. “(Swiss) GraphoLearn: An App-Based Tool to Support Beginning Readers”. Research and Practice in Technology Enhanced Learning, vol. 15, Feb. 2020, https://rptel.apsce.net/index.php/RPTEL/article/view/2020-15005.