@article{CRMATH_2012__350_3-4_193_0,
     author = {Costabel, Martin and Darrigrand, Eric and Sakly, Hamdi},
     title = {The essential spectrum of the volume integral operator in electromagnetic scattering by a homogeneous body},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {193--197},
     publisher = {Elsevier},
     volume = {350},
     number = {3-4},
     year = {2012},
     doi = {10.1016/j.crma.2012.01.017},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2012.01.017/}
}