To cite lslx in publications use:

Po-Hsien Huang (in press). lslx: Semi-Confirmatory Structural Equation Modeling via Penalized Likelihood. Journal of Statistical Software

Corresponding BibTeX entry:

  @Article{,
    title = {lslx: Semi-Confirmatory Structural Equation Modeling via
      Penalized Likelihood},
    author = {Po-Hsien Huang},
    journal = {Journal of Statistical Software},
    year = {in press},
  }