@TechReport{	  it:2003-041,
  author	= {Wendy Kress},
  title		= {A Compact Fourth Order Time Discretization Method for the
		  Wave Equation},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Scientific Computing},
  year		= {2003},
  number	= {2003-041},
  month		= aug,
  abstract	= {A fourth order accurate discretization in time and space
		  for the wave equation in first order system formulation is
		  investigated. The unconditional stability of the scheme is
		  established and the performance of the scheme is compared
		  to a second order accurate scheme for a smooth one
		  dimensional problem and it is also applied to a two
		  dimensional problem with piecewise constant coefficients.
		  }
}