To cite netrespose (algorithm and package) in publications use:

  Leo Lahti et al. Global modeling of transcriptional responses in
  interaction networks Bioinformatics 26(21):2713--20, 2010.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Global modeling of transcriptional responses in interaction networks},
    author = {Leo Lahti and Juha E.A. Knuuttila and Samuel Kaski},
    journal = {Bioinformatics},
    year = {2010},
    volume = {26},
    issue = {21},
    pages = {2713--20},
  }

For ICMg functionality, please cite additionally the references listed
in help(ICMg.combined.sampler). Thanks for Olli-Pekka Huovilainen and
Antonio Gusmao for contributions to the R/C implementation of the
netresponse algorithm and Juuso Parkkinen for ICMg.