A. de Sá, A. Casimiro, R. Machado, und L. da Costa Carmo. BICT, Volume 289 von Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Seite 28-38. Springer, (2019)
M. Kickmeier-Rust, C. Steiner, und D. Albert. Technology-Enhanced Systems and Tools for Collaborative Learning Scaffolding, Volume 350 von Studies in Computational Intelligence, (2011)