Kwan, C. , Li, X. , Lao, D. , Deng, Y. , Ren, Z. , Raj, B. , Singh, R. , Stern, R. (2007). 'Voice Driven Applications in Non-stationary and Chaotic Environment'. World Academy of Science, Engineering and Technology, Open Science Index 7, International Journal of Mechanical and Materials Engineering, 1(7), 1021 - 1029.