D. Stowell and M. D. PlumbleyFast multidimensional entropy estimation by k-d partitioning.IEEE Signal Processing Letters 16 (6), 537--540, June 2009.http://dx.doi.org/10.1109/LSP.2009.2017346

Corresponding BibTeX entry:

  @Article{,
    title = {{Fast Multidimensional Entropy Estimation by $k$-d
      Partitioning}},
    author = {Dan Stowell and Mark Plumbley D.},
    journal = {{IEEE Signal Processing Letters}},
    year = {2009},
    volume = {16},
    number = {6},
    pages = {537-540},
    doi = {10.1109/LSP.2009.2017346},
  }