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Autor:
N. S. de Rezende, M. A. Raupp
Publikováno v:
Boletim da Sociedade Brasileira de Matemática. 8:131-147
A Gelerkin type method, based on trigonometric functions and Crank-Nicolson discretizations of the time variable, is applied to compute solutions of the initial boundary value problem associated with the equation $$\rho _0 u_{tt} = a_1 u_{xx} + a_2 u