J. Gomes, and M. El-Sharkawy. Computational Science and Computational Intelligence (CSCI), 2015 International Conference on, page 476--480. IEEE, (2015)
A. Larcher, K. Lee, and S. Meignier. Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on, page 5095--5099. IEEE, (2016)