S. Watanabe, J. Hershey, Y. Marks, Tim K. Fujii, und Y. Koji. Proceedings of INTERSPEECH 2014, 15th Annual Conference of the International Speech Communication Association, Singapore, Seite 323-327. (2014)
B. Liu, H. Chen, und W. He. ICTAI '05: Proceedings of the 17th IEEE International Conference on Tools with Artificial Intelligence, Hong Kong, China, Seite 254-259. (2005)