'''Riferimenti bibliografici:'''

*J. J. Faran Jr e R. Hills Jr, ''Correlators for signal reception'', in Office of Naval Research (contract n5 ori-76 project order x technical memorandum no. 27), Cambridge, Massachusetts, Acoustics Research Laboratory Division of Applied Science Harvard University, 1952.

*J. J. Faran Jr e R.Hills Jr, ''The application of correlation techniques to acoustic receiving systems'', in Office of Naval Research (contract n5 ori-76 project order x technical memorandum no. 28), Cambridge, Massachusetts, Acoustics Research Laboratory Division of Applied Science Harvard University, 1952.

*R. J. Urick, ''Principles of underwater sound'', 3ª ed., Mc Graw – Hill, 1968.

*C.  Del Turco, '' La correlazione '', Collana scientifica ed. Moderna La Spezia,1993

* C. Del Turco, '' Principi ed applicazioni dei metodi di autocorrelazione "Rivista L'Antenna  anno XXXII n° 6 1960".''

*C. Del Turco, ''Sistema di Fasci Acustici per Localizzazione a Coerenza d'Onda Naturale'' , Direzione Arsenale M.M. di La Spezia, 2002

*P.J. Davis and P. Rabinowitz, ''Methods of Numerical Integration'', 2nd ed. New York: Academic Press, 1984.

*F.B. Hildebrand,''Introduction to Numerical Analysis'', New York: McGraw-Hill, pp. 319-323, 1956.

*A.R. Krommer and C.W. Ueberhuber,''Numerical Integration on Advanced Computer Systems''. Berlin: Springer-Verlag, 1994.

*Y.W.Lee-C.A.Stutt ‘’Statistical prediction of noise.’’ Res.Lab. of El.M.I.T July 12/1949

*Y.W.Lee-T.P.Cheatham-J.B. Wiesner ‘’The application of correlation functions in the detection of small signal in noise.’’ Res.Lab. of El.M.I.T. October 13/1949

* A.Rakowski ‘’The application of the autocorrelation method to the spectral analysis of sound records.’’ King's College,Newcastle upon Tyne 1960

* G.Potier ‘’Les lignes a retard et leur utilisation.’’ Imprimeud Librarie 55 Gauthier-Villars Paris 1953

* G.Korn ‘’Random Process Simulation and Measuraments’’. Mc.Graw-Hill 1966

* A.G.Lioyd  ‘’90 degree phase-difference networks are simply’’. Electronic Design 19 Sept.1976

* R.B.Dome ‘’Wideband phase shift networks’’. Electronics Dec. 1946

*P.F.Panter ‘’Modulation noise and spectral analysis’’. McGraw.Hill 1965

* Karman e Biot ‘’Metodi matematici nell'ingegneria.’’ Einaudi, 1951

* G.Cariolario ‘’Teoria dei segnali-Parte 1. Coop.Libraria Editrice Clemp

*A.I.Zverev  ‘’Handbook of filter synthesis’’. J.Wiley-Sons 1967

* A.Papoulis ‘’The Fourier Integral and its Applications’’. McGraw.Hill 1962

*Melvin J.Jacobson ‘’Analysis a multiple receiver correlation system.’’ J.A.S.A Vol.29 n.12 Dec.1957