M. Longhi, M. Bercht, and P. Behar.
" AnimA: Prototype for Recognizing Emotional States in the Learning Process", in Proceedings of the 2nd Workshop-School on Agents, Environments, and Applications, Santa Cruz do Sul/RS, 2008, pp. 54-63, doi: https://doi.org/10.5753/wesaac.2008.33077.