To cite package ‘a4’ in publications use:

Talloen W, Verbeke T (2026). a4: Automated Affymetrix Array Analysis Umbrella Package. R package version 1.61.0, https://bioconductor.org/packages/a4.

Corresponding BibTeX entry:

  @Manual{,
    title = {a4: Automated Affymetrix Array Analysis Umbrella Package},
    author = {Willem Talloen and Tobias Verbeke},
    year = {2026},
    note = {R package version 1.61.0},
    url = {https://bioconductor.org/packages/a4},
  }