To cite lagsarlmtree in publications use:

Wagner M and Zeileis A (2017). “Heterogeneity and Spatial Dependence of Regional Growth in the EU: A Recursive Partitioning Approach.” German Economic Review, Forthcoming. doi: 10.1111/geer.12146, https://eeecon.uibk.ac.at/~zeileis/papers/Wagner+Zeileis-2017.pdf.

Corresponding BibTeX entry:

  @Article{,
    title = {Heterogeneity and Spatial Dependence of Regional Growth in
      the {EU}: A Recursive Partitioning Approach},
    author = {Martin Wagner and Achim Zeileis},
    journal = {German Economic Review},
    year = {2017},
    volume = {Forthcoming},
    doi = {10.1111/geer.12146},
    url =
      {https://eeecon.uibk.ac.at/~zeileis/papers/Wagner+Zeileis-2017.pdf},
  }