@article{DHS2017,
  title = {Covariance Regularity and $\mathcal{H}$-Matrix Approximation for Rough Random Fields},
  author = {D{\"o}lz, J. and Harbrecht, H. and Schwab, Ch.},
  year = {2017},
  month = apr,
  volume = {135},
  pages = {1045--1071},
  issn = {0945-3245},
  doi = {10.1007/s00211-016-0825-y},
  journal = {Numerische Mathematik},
  language = {en},
  number = {4}
}