@article {MR3218334,
	title = {On local super-penalization of interior penalty discontinuous Galerkin methods},
	journal = {Int. J. Numer. Anal. Model.},
	volume = {11},
	number = {3},
	year = {2014},
	pages = {478{\textendash}495},
	issn = {1705-5105},
	author = {Andrea Cangiani and Chapman, John and E.H. Georgoulis and Jensen, Max}
}
