Z. Ling, и R. Wang. Proceedings of the 2007 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 4, стр. 1245-1248. Honolulu, HI, USA, (апреля 2007)
A. Hunt, и A. Black. Proceedings of the 1996 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 1, стр. 373-376. Atlanta, GA, USA, (мая 1996)
T. Ezzat, G. Geiger, и T. Poggio. Proceedings of the 29th Annual Conference on Computer Graphics and Interactive Techniques (SIGGRAPH), стр. 388-398. San Antonio, TX, USA, (июля 2002)