@article {MR3519203,
    AUTHOR = {Brenner, S. C. and Gedicke, J. and Sung, L.-Y.},
     TITLE = {An adaptive {$P_1$} finite element method for two-dimensional
              transverse magnetic time harmonic {M}axwell's equations with
              general material properties and general boundary conditions},
   JOURNAL = {J. Sci. Comput.},
  FJOURNAL = {Journal of Scientific Computing},
    VOLUME = {68},
      YEAR = {2016},
    NUMBER = {2},
     PAGES = {848--863},
      ISSN = {0885-7474},
   MRCLASS = {65N30 (65N12 65N15 78M25)},
  MRNUMBER = {3519203},
       DOI = {10.1007/s10915-015-0161-x},
       URL = {https://doi.org/10.1007/s10915-015-0161-x},
}