@article{offner2019error,
  title={Error Boundedness of Discontinuous {G}alerkin Methods with Variable
         Coefficients},
  author={{\"O}ffner, Philipp and Ranocha, Hendrik},
  journal={Journal of Scientific Computing},
  volume={79},
  number={3},
  pages={1572--1607},
  year={2019},
  month={06},
  doi={10.1007/s10915-018-00902-1},
  eprint={1806.02018},
  eprinttype={arxiv},
  eprintclass={math.NA}
}