1. Various Authors (1992) Identificazione Strutturale: Metodi Dinamici e Diagnostica. Seminario ISMES, Bergamo
2. Bendat JS, Piersol AG (1966) Measurement and analysis of random data. Wiley, New York
3. Billings SA, Chen S (1991) Modelling and analysis of non-linear time series. Int J Control
4. Billings SA (1985) Input-output parametric models for non-linear systems. Int J Control
5. Bittanti S, Schiavoni N (1982) Modellistica e controllo. Clup, Milano