The essential spectrum of the volume integral operator in electromagnetic scattering by a homogeneous body

Martin Costabel; Eric Darrigrand; Hamdi Sakly

Comptes Rendus. Mathématique, Volume 350 (2012) no. 3 p. 193-197

Anisotropic regularity results for Laplace and Maxwell operators in a polyhedron

Annalisa Buffa; Martin Costabel; Monique Dauge

Comptes Rendus. Mathématique, Volume 336 (2003) no. 7 p. 565-570