@incollection {MR2004571,
    AUTHOR = {Cai, Xiao.-Chuan. and Dryja, Maksymilian. and Sarkis, Marcus.},
     TITLE = {R{ASHO}: a restricted additive {S}chwarz preconditioner with
              harmonic overlap},
 BOOKTITLE = {Domain decomposition methods in science and engineering
              ({L}yon, 2000)},
    SERIES = {Theory Eng. Appl. Comput. Methods},
     PAGES = {337--344},
 PUBLISHER = {Internat. Center Numer. Methods Eng. (CIMNE), Barcelona},
      YEAR = {2002},
   MRCLASS = {65N22 (65N30 65N55)},
  MRNUMBER = {2004571},
}