Geodesic
Conservation law for the Cauchy--Navier equation of elastodynamics wave via Fourier transform
Trudy Instituta matematiki, Tome 24 (2016) no. 1, pp. 100-106

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In this paper, we use the method of Fourier analysis to derive the formula of the total energy for the Cauchy problem of the Cauchy–Navier elastodynamics wave equation describing the motion of an isotropic elastic body. The conservation law of the total energy is obtained and consequently, the global uniqueness of the solution to the problem is implied. 
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     author = {V. I. Korzyuk and N. V. Vinh and N. T. Minh},
     title = {Conservation law for the {Cauchy--Navier} equation of elastodynamics wave via {Fourier} transform},
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V. I. Korzyuk; N. V. Vinh; N. T. Minh. Conservation law for the Cauchy--Navier equation of elastodynamics wave via Fourier transform. Trudy Instituta matematiki, Tome 24 (2016) no. 1, pp. 100-106. http://geodesic.mathdoc.fr/item/TIMB_2016_24_1_a11/