@Misc{SCI:Zal2021a,
  author =    "V. Zala and R. M. Kirby and A. Narayan",
  title =     "Structure-preserving Nonlinear Filtering for
              Continuous and Discontinuous Galerkin Spectral/hp
              Element Methods",
  subtitle =  "arXiv preprint arXiv:2106.08316",
  year =      "2021",
  url =       "http://www.sci.utah.edu/publications/Zal2021a/2106.08316.pdf",
}