@Article{SCI:Xin2021a,
  author =    "W. W.  Xing and A. A. Shah and P. Wang and S. Zhe
              and Q. Fu and R. M. Kirby",
  title =     "Residual Gaussian process: A tractable
              nonparametric Bayesian emulator for multi-fidelity
              simulations",
  journal =   "Applied Mathematical Modelling",
  volume =    "97",
  pages =     "36-56",
  year =      "2021",
  publisher = "Elsevier",
  url =       "http://www.sci.utah.edu/publications/Xin2021a/1-s2.0-S0307904X21001724-main.pdf",
}