M. Costabel et M. Dauge, MAXWELL SINGULARITIES ON POLYHEDRAL OR POLYGONAL DOMAINS, Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 324(9), 1997, pp. 1005-1010
We provide a description of the non regular parts of the fields involv
ed in Maxwell equations, first at the variational level, then at the s
olution level when the right hand side has regularity properties. (For
the ideas of the proofs, see [5]. Details will be published elsewhere
.).