To cite use of 'analogue' in publications use:

Simpson, G.L. and Oksanen, J. ( 2013 ). analogue: Analogue matching and Modern Analogue Technique transfer function models. (R package version 0.12-0 ). (http://cran.r-project.org/package=analogue).
Simpson, G.L. (2007). Analogue Methods in Palaeoecology: Using the analogue Package Journal of Statistical Software, 22(2), 1--29

Corresponding BibTeX entries:

  @Manual{,
    title = {analogue: Analogue and weighted averaging methods for
      palaeoecology},
    author = {G. L. Simpson and J. Oksanen},
    year = {2013},
    note = {R package version 0.12-0},
    url = {http://cran.r-project.org/package=analogue},
  }
  @Article{,
    title = {Analogue Methods in Palaeoecology: Using the analogue
      Package},
    author = {G. L. Simpson},
    journal = {Journal of Statistical Software},
    year = {2007},
    volume = {22},
    number = {2},
    pages = {1--29},
  }