@online{izgin2026positivity,
  title={A Positivity-Preserving Relaxation Algorithm},
  author={Izgin, Thomas and Ranocha, Hendrik and Shu, Chi-Wang},
  year={2026},
  month={04},
  eprint={2604.02308},
  archivePrefix={arXiv},
  primaryClass={math.NA},
  doi={10.48550/arXiv.2604.02308}
}