A. Metallinou, A. Katsamanis, and S. Narayanan. Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on, page 2401--2404. IEEE, (2012)
J. Deng, Z. Zhang, E. Marchi, and B. Schuller. Affective Computing and Intelligent Interaction (ACII), 2013 Humaine Association Conference on, page 511--516. IEEE, (2013)