@TechReport{	  Griebel.Hamaekers.Heber:2008,
  author	= {M. Griebel and J. Hamaekers and F. Heber},
  title		= {{BOSSANOVA: A bond order dissection approach for efficient
		  electronic structure calculations}},
  institution	= {Institut f\"ur Numerische Simulation, Universit\"at Bonn},
  year		= {2008},
  type		= {{INS Preprint}},
  inspreprintnum= {0704},
  number	= {0704},
  annote	= {inspreprint,report},
  pdf		= {http://wissrech.ins.uni-bonn.de/research/pub/hamaekers/INSPreprint0704GriebelHamaekersHeber.pdf}
		  
}