Colella, P., and Woodward, P. R. 1984, ``The Piecewise Parabolic Method (PPM) for Gas-Dynamical Simulations,'' J. Comp. Phys., 54, 174.
Marti, J., and Mueller, E. 1994, MPIfA preprint #815 on special relativity and PPM.
Woodward, P. 1986, in Astrophysical Radiation Hydrodynamics, ed. K.-H. Winkler and M. L. Norman, (Dordrecht: D. Reidel)
Woodward, P., and Colella, P. 1984, ``The Numerical Simulation of Two-Dimensional Fluid Flow with Strong Shocks,'' J. Comp. Phys., 54, 115.