To cite package 'limSolve' in publications use:

Karline Soetaert, Karel Van den Meersche, Dick van Oevelen (2009). limSolve: Solving Linear Inverse Models. R package 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, 30(1), 1–15. ISSN 1548-7660, https://www.jstatsoft.org/v30/c01.

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 = {https://www.jstatsoft.org/v30/c01},
  }