@article{DHM2019,
  title = {On the {{Best Approximation}} of the {{Hierarchical Matrix Product}}},
  author = {D{\"o}lz, J. and Harbrecht, H. and Multerer, M.},
  year = {2019},
  month = jan,
  volume = {40},
  pages = {147--174},
  issn = {0895-4798},
  doi = {10.1137/18M1189373},
  journal = {SIAM Journal on Matrix Analysis and Applications},
  number = {1}
}