1. Scarrott andNaylor,Wire-type acoustic delay lines for digital Storage, Proc. IEE Part B, Suppl. no. 3, 1956.
2. G. Ronca,Influenza della curvatura sulla propagazione di vibrazioni torsionali in fili metallici, Thesis, Facoltà di Scienze, Milano, 1969.
3. L. D. Landau andE. M. Lifschitz,Theory of elasticity, Pergamon Press, London, 1958.
4. R. N. Thurston,Effective elastic coefficients for wave propagation in crystaly under stress, Journal of Acoustical Society of America, 37, 2, 1965.
5. Thurston andTornillo,Coiled wire torsional wave delay line, IRE Conv. Record., Part 2, 1958.