@Misc{SCI:Kes2021d,
  author =    "V. Keshavarzzadeh and S. Zhe and R.M. Kirby and A.
              Narayan",
  title =     "GP-HMAT: Scalable, ${O}(n\log (n)) $ Gaussian
              Process Regression with Hierarchical Low-Rank
              Matrices",
  subtitle =  "arXiv preprint arXiv:2201.00888",
  year =      "2021",
  url =       "http://www.sci.utah.edu/publications/Kes2021d/2201.00888.pdf",
}