p-Multigrid solution of high-order discontiunous Galerkin discretizations of the compressible Navier-Stokes equations

Fidkowski, K. J., Oliver, T. A., Lu, J., and Darmofal, D. L., “p-Multigrid solution of high-order discontiunous Galerkin discretizations of the compressible Navier-Stokes equations”, Journal of Computational Physics, vol. 207, no. 1, 2005, pp. 92–113.