To cite lgcp in publications use:

Benjamin M. Taylor, Tilman M. Davies, Barry S. Rowlingson, Peter J. Diggle (2013). lgcp: An R Package for Inference with Spatial and Spatio-Temporal Log-Gaussian Cox Processes. Journal of Statistical Software, 52(4), 1-40. URL http://www.jstatsoft.org/v52/i04/.

Benjamin M. Taylor, Tilman M. Davies, Barry S. Rowlingson, Peter J. Diggle (2015). Bayesian Inference and Data Augmentation Schemes for Spatial, Spatiotemporal and Multivariate Log-Gaussian Cox Processes in R. Journal of Statistical Software, 63(7), 1-48. URL http://www.jstatsoft.org/v63/i07/.

Corresponding BibTeX entries:

  @Article{,
    title = {{lgcp}: An {R} Package for Inference with Spatial and
      Spatio-Temporal Log-{G}aussian {C}ox Processes},
    author = {Benjamin M. Taylor and Tilman M. Davies and Barry S.
      Rowlingson and Peter J. Diggle},
    journal = {Journal of Statistical Software},
    year = {2013},
    volume = {52},
    number = {4},
    pages = {1--40},
    url = {http://www.jstatsoft.org/v52/i04/},
  }

  @Article{,
    title = {{B}ayesian Inference and Data Augmentation Schemes for
      Spatial, Spatiotemporal and Multivariate Log-{G}aussian {C}ox
      Processes in {R}},
    author = {Benjamin M. Taylor and Tilman M. Davies and Barry S.
      Rowlingson and Peter J. Diggle},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {63},
    number = {7},
    pages = {1--48},
    url = {http://www.jstatsoft.org/v63/i07/},
  }