Carlos Alario-Hoyos, María Jesús Rodríguez-Triana, Maren Scheffel, Inmaculada Arnedillo Sánchez, Sebastian Dennerlein: Addressing Global Challenges and Quality Education - 15th European Conference on Technology Enhanced Learning, EC-TEL 2020, Heidelberg, Germany, September 14-18, 2020, Proceedings. Lecture Notes in Computer Science 12315, Springer 2020, ISBN 978-3-030-57716-2