To cite package ‘ArrayExpress’ in publications use:

  Kauffmann, A., Rayner, T.F., Parkinson, H., Kapushesky, M., Lukk, M.,
  Brazma, A., Huber, W. (2009) Importing ArrayExpress datasets into
  R/Bioconductor. Bioinformatics, 25(16):2092-4.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Importing ArrayExpress datasets into R/Bioconductor},
    author = {Audrey Kauffmann and Tim F. Rayner and Helen Parkinson and Misha Kapushesky and Margus Lukk and Alvis Brazma and Wolfgang Huber},
    journal = {Bioinformatics},
    year = {2009},
    volume = {25},
    number = {16},
    pages = {2092--4},
  }

This free open-source software implements academic research by the
authors and co-workers. If you use it, please support the project by
citing the appropriate journal articles.