@article{bonnetbendhia:hal-00975073,
  TITLE = {{Time harmonic wave diffraction problems in materials with sign-shifting coefficients}},
  AUTHOR = {Bonnet-Ben Dhia, Anne-Sophie and Ciarlet, Patrick and Zw{\"o}lf, Carlo Maria},
  URL = {https://hal-ensta-paris.archives-ouvertes.fr/hal-00975073},
  JOURNAL = {{Journal of Computational and Applied Mathematics}},
  PUBLISHER = {{Elsevier}},
  VOLUME = {234},
  NUMBER = {6},
  PAGES = {1912-1919},
  YEAR = {2010},
  DOI = {10.1016/j.cam.2009.08.041},
  HAL_ID = {hal-00975073},
  HAL_VERSION = {v1},
}