To cite ic.infer in publications use:

Ulrike Groemping (2010). Inference With Linear Equality And Inequality Constraints Using R: The Package ic.infer. Journal of Statistical Software, Forthcoming.

Corresponding BibTeX entry:

  @Article{,
    title = {Inference With Linear Equality And Inequality Constraints
      Using {R}: The Package {ic.infer}},
    author = {Ulrike Gr\"omping},
    journal = {Journal of Statistical Software},
    year = {2010},
    note = {Forthcoming},
  }