To cite lacm in publications use:

Pedeli X, Varin C (2018). Pairwise likelihood estimation of latent autoregressive count models. https://arxiv.org/abs/1805.10865.

Corresponding BibTeX entry:

  @Manual{,
    title = {Pairwise likelihood estimation of latent autoregressive
      count models},
    author = {Xanthi Pedeli and Cristiano Varin},
    year = {2018},
    url = {https://arxiv.org/abs/1805.10865},
  }