To cite the vsn package in publications use:

Huber W, von Heydebreck A, Sueltmann H, Poustka A, Vingron M (2002). “Variance Stabilization Applied to Microarray Data Calibration and to the Quantification of Differential Expression.” Bioinformatics, 18 Suppl. 1, S96-S104. doi:10.1093/bioinformatics/18.suppl_1.s96.

Corresponding BibTeX entry:

  @Article{,
    title = {Variance Stabilization Applied to Microarray Data
      Calibration and to the Quantification of Differential
      Expression},
    author = {Wolfgang Huber and Anja {von Heydebreck} and Holger
      Sueltmann and Annemarie Poustka and Martin Vingron},
    doi = {10.1093/bioinformatics/18.suppl_1.s96},
    journal = {Bioinformatics},
    year = {2002},
    volume = {18 Suppl. 1},
    pages = {S96-S104},
  }