@TechReport{	  it:2001-015,
  author	= {Magnus Sv{\"a}rd},
  title		= {On coordinate transformations for summation-by-parts
		  operators},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Scientific Computing},
  year		= {2001},
  number	= {2001-015},
  month		= aug,
  abstract	= {High order finite difference methods obeying a
		  summation-by-parts (SBP) rule are developed for equidistant
		  grids. With curvilinear grids, a coordinate transformation
		  operator that does not destroy the SBP property must be
		  used. We show that it is impossible to construct such an
		  operator without decreasing the order of accuracy of the
		  method. }
}