@article{ranocha2017extended,
  title={Extended skew-symmetric form for summation-by-parts operators and
         varying Jacobians},
  author={Ranocha, Hendrik and {\"O}ffner, Philipp and Sonar, Thomas},
  journal={Journal of Computational Physics},
  volume={342},
  pages={13--28},
  year={2017},
  month={04},
  publisher={Elsevier},
  doi={10.1016/j.jcp.2017.04.044},
  eprint={1511.08408},
  eprinttype={arxiv},
  eprintclass={math.NA},
  keywords={journal}
}