De Luca, G.: Fundamental Concepts in EMG Signal Acquisition; DelSys Inc, 2001
Kay, S.M., Marple, S.L.: Spectrum Analysis – A Modern Perspective, Proc. IEEE, vol. 69, 1981, pp. 1380-1419
Proakis, J.G., Manolakis, D.G.: Introduction to Digital Signal Processing. Macmillan Publishing Company , New York, 1988 (ISBN 0-02-396815-X)