Remacle, J.-F., Flaherty, J. E., & Shephard, M. S. (2003). An adaptive discontinuous Galerkin technique with an orthogonal basis applied to compressible flow problems. SIAM Review, 45(1), 53-72. https://doi.org/10.1137%2fS00361445023830&partnerID=40&md5=2f113da0f0947947e460e89a657e94a9 (Original work published 2003)