1. Digital Signal Processing;Cavicchi,2000
2. The Analysis of Time Series: An Introduction;Chatfield,2004
3. Comparative Evaluation of Several Pitch Process Models in the Detection of Vocal Tremor;Gath;IEEE Trans. Biomed. Eng.,1987
4. Spectral Analysis and Its Applications;Jenkins,1968
5. The Spectral Analysis of Time Series;Koopmans,1995