S.  Govaerts, Cao, Y., Vozniuk, A., Holzer, A., Zutin, D. G., Ruiz, E. S. C., Bollen, L., Manske, S., Faltin, N., Salzmann, C., Tsourlidaki, E., and Gillet, D., ?Towards an online lab portal for inquiry-based STEM learning at school?, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 8167 LNCS, pp. 244-253, 2013.