@article{com2pen01b,
  author = {A. Penttinen and J. Virtamo},
  title = {Simulation of Two-Dimensional Fractional Gaussian Noise},
  year = {2004},
  journal = {Methodology and Computing in Applied Probability},
  volume = {6},
  number = {1},
  pages = {99--107},
  url = {http://dx.doi.org/10.1023/B:MCAP.0000012417.10460.03},
}