@article {Fidkowski_2005_pMultigrid_Higher-Order_DG_Navier-Stokes, title = {p-{Multigrid} solution of high-order discontiunous {Galerkin} discretizations of the compressible {Navier-Stokes} equations}, journal = {Journal of Computational Physics}, volume = {207}, number = {1}, year = {2005}, pages = {92{\textendash}113}, doi = {10.1016/j.jcp.2005.01.005}, author = {Fidkowski, K J and Oliver, T A and Lu, J and Darmofal, D L} }