Schröder, M., Devillers, L., Karpouzis, K., Martin, J., Pelachaud, C., Peter, C., Pirker, H., Schuller, B., Tao, J., & Wilson, I. (2007). What should a generic emotion markup language be able to represent?. In Paiva A. et al. (Ed.), Affective Computing and Intelligent Interaction, Second International Conference, ACII 2007, September 12-14, Lisbon, Portugal, Proceedings: LNCS 4738 (pp. 440--451). Berlin-Heidelberg: Springer .