Ruiz Calleja, Adolfo, Sebastian Dennerlein, Dominik Kowald, Dieter Theiler, Elisabeth Lex, and Tobias Ley. 2019. “An Infrastructure for Workplace Learning Analytics: Tracing Knowledge Creation With the Social Semantic Server”. Journal of Learning Analytics 6 (2), 120–139. https://doi.org/10.18608/jla.2019.62.9.