@Article{	  Griebel.Oswald:1995*1,
  author	= {M. Griebel and P. Oswald},
  title		= {On the abstract theory of additive and multiplicative
		  {S}chwarz algorithms},
  journal	= {Numer. Math.},
  volume	= 70,
  pages		= {163--180},
  annote	= {article},
  note		= {Also as SFB-Report 342/6/93 A, Institut f\"{u}r
		  Informatik, Technische Universit\"at M\"unchen, 1993},
  year		= {1995},
  ps		= {http://wissrech.ins.uni-bonn.de/research/pub/griebel/poswald8GS.ps.gz}
		  
}