To cite package 'limSolve' in publications use:

Soetaert K., Van den Meersche, K., van Oevelen, D. (2009). limSolve: Solving Linear Inverse Models. R-package version 1.5.1
Van den Meersche, K., Soetaert K., van Oevelen, D. (2009). xsample(): An R Function for Sampling Linear Inverse Problems. Journal of Statistical Software, Code Snippets, vol 30, 1-15

If you use function 'xsample' use the second reference

Corresponding BibTeX entries:

  @Manual{,
    title = {limSolve: Solving Linear Inverse Models },
    year = {2009},
    author = {Karline Soetaert and Karel Van den Meersche and Dick van
      Oevelen},
    note = {R package 1.5.1},
  }
  @Article{,
    author = {Karel Van den Meersche and Karline Soetaert and Dick Van
      Oevelen},
    title = {xsample(): An R Function for Sampling Linear Inverse
      Problems},
    journal = {Journal of Statistical Software, Code Snippets},
    volume = {30},
    number = {1},
    pages = {1--15},
    year = {2009},
    coden = {JSSOBK},
    issn = {1548-7660},
    url = {http://www.jstatsoft.org/v30/c01},
  }