@TechReport{	  it:2002-034,
  author	= {Stefan Johansson},
  title		= {Numerical Solution of the Linearized Euler Equations Using
		  High Order Finite Difference Operators with the Summation
		  by Parts Property},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Scientific Computing},
  year		= {2002},
  number	= {2002-034},
  month		= oct,
  note		= {Updated version, March 2003, available at
		  \url{http://www.it.uu.se/research/publications/reports/2002-034/2002-034-updated}
		  (PDF and Postscript)},
  abstract	= {We have used high order finite difference methods with the
		  summation by parts property (SBP) on the 1D linearized
		  Euler equations. The boundary conditions are imposed with
		  both the projection method and the simultaneous
		  approximation term method (SAT) for comparison. The formal
		  fourth order of accuracy of the high order SBP operator was
		  verified with both the projection method and the SAT
		  method. Some relatively large errors were observed at the
		  artificial boundaries and further investigations are needed
		  to improve the non-reflecting boundary conditions. }
}