@article {MR1367653,
    AUTHOR = {Dryja, Maksymilian and Sarkis, Marcus V. and Widlund, Olof B.},
     TITLE = {Multilevel {S}chwarz methods for elliptic problems with
              discontinuous coefficients in three dimensions},
   JOURNAL = {Numer. Math.},
  FJOURNAL = {Numerische Mathematik},
    VOLUME = {72},
      YEAR = {1996},
    NUMBER = {3},
     PAGES = {313--348},
      ISSN = {0029-599X},
     CODEN = {NUMMA7},
   MRCLASS = {65N30},
  MRNUMBER = {1367653 (96h:65134)},
MRREVIEWER = {I. Norman Katz},
       DOI = {10.1007/s002110050172},
       URL = {http://dx.doi.org/10.1007/s002110050172},
}