To cite package ‘IRanges’ in publications use:

  Lawrence M, Huber W, Pag\`es H, Aboyoun P, Carlson M, et al. (2013)
  Software for Computing and Annotating Genomic Ranges. PLoS Comput
  Biol 9(8): e1003118. doi:10.1371/journal.pcbi.1003118

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Software for Computing and Annotating Genomic Ranges},
    author = {Michael Lawrence and Wolfgang Huber and Herv\'e Pag\`es and Patrick Aboyoun and Marc Carlson and Robert Gentleman and Martin Morgan and Vincent Carey},
    year = {2013},
    journal = {{PLoS} Computational Biology},
    volume = {9},
    issue = {8},
    doi = {10.1371/journal.pcbi.1003118},
    url = {http://www.ploscompbiol.org/article/info%3Adoi%2F10.1371%2Fjournal.pcbi.1003118},
  }