TY - JOUR AU - Giuseppe De Nittis AU - Max Lein TI - The perturbed Maxwell operator as pseudodifferential operator JO - Documenta mathematica PY - 2014 SP - 63 EP - 101 VL - 19 UR - http://geodesic.mathdoc.fr/articles/10.4171/dm/440/ DO - 10.4171/dm/440 ID - 10_4171_dm_440 ER -