Geodesic
Ellipticity of the electric field integral equation for absorbing media and the convergence of the Rao–Wilton–Glisson method
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 54 (2014) no. 1, pp. 105-113 Cet article a éte moissonné depuis la source Math-Net.Ru

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The operator of the electric field integral equation is proved to be elliptic in the case of a flat screen and absorbing media. The method of quadratic forms is applied. As a result, the Rao–Wilton–Glisson method is shown to converge in the case of a flat screen in an absorbing medium. 
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M. Yu. Medvedik; Yu. G. Smirnov. Ellipticity of the electric field integral equation for absorbing media and the convergence of the Rao–Wilton–Glisson method. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 54 (2014) no. 1, pp. 105-113. http://geodesic.mathdoc.fr/item/ZVMMF_2014_54_1_a8/

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