Correcting gene expression data when neither the unwanted variation nor the factor of interest are observed Laurent Jacob, Johann Gagnon-Bartsch and Terence P. Speed 2016 Biostatistics http://biostatistics.oxfordjournals.org/content/17/1/16.full.pdf+html

Corresponding BibTeX entry:

  @Article{,
    author = {{Jacob} and {L.} and {Gagnon-Bartsch} and {J.} and
      {Speed} and T. P.},
    title = {Correcting gene expression data when neither the unwanted
      variation nor the factor of interest are observed},
    journal = {Biostatistics},
    year = {2016},
    url =
      {http://biostatistics.oxfordjournals.org/content/17/1/16.full.pdf+html},
  }