References
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- Scherer, K. (2005): “What Are Emotions? And How Can They Be Measured?” Social Science Information, Vol. 44, No. 4, pp. 695 - 729.
- Garbas, J.-U.; Ruf, T.; Unfried, M. and Dieckmann, A. (2013): Towards Robust Real-time Valence Recognition from Facial Expressions for Market Research Applications. Proceedings of the 5th International Conference on Affective Computing and Intelligent Interaction, pp. 570 - 575.