1. M.E. Gurtin, The Linear Theory of Elasticity, in Handbuch der Physik (ed. C. Truesdell), vol. VIa/2, Springer-Verlag (1971), pp. 1?295.
2. L. Brun, Su l'unicit� en thermo�lasticit� dynamique et diverses expressions analogues � la formule de Clapeyron, C. R. Acad. Sci., Paris 261 (1965) 2584?2587.
3. R.J. Knops and L.E. Payne, Uniqueness in classical elastodynamics, Arch. Rational Mech. Anal. 27 (1968) 349?355.
4. B. Carbonaro and R. Russo, Energy inequalities and the domain of influence theorem in classical elastodynamics, J. Elasticity 14 (1984) 163?174.
5. B. Carbonaro and R. Russo, The uniqueness problem in the dynamical theory of linear hyperelasticity in unbounded domains, Atti VII Congresso AIMETA II (1984) 47?55.