To cite LS2W in publications use:

Eckley, I.A. and Nason, G.P. (2011). LS2W: Implementing the Locally Stationary 2D Wavelet Process Approach in R. Journal of Statistical Software, 43(3), 1-23. URL http://www.jstatsoft.org/v43/i03/.

Corresponding BibTeX entry:

  @Article{,
    title = {{LS2W}: Implementing the Locally Stationary {2D} Wavelet
      Process Approach in {R}},
    author = {{Eckley} and {I.A.} and {Nason} and {G.P.}},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {43},
    number = {3},
    pages = {1--23},
    url = {http://www.jstatsoft.org/v43/i03/},
  }