To cite boostmtree in publications use:

Ishwaran H, Pande A, Kogalur U (2020). Boosted Multivariate Trees for Longitudinal Data. R package version 1.5.0, https://cran.r-project.org/package=boostmtree.

Corresponding BibTeX entry:

  @Manual{,
    title = {Boosted Multivariate Trees for Longitudinal Data},
    author = {H. Ishwaran and A. Pande and U.B. Kogalur},
    publisher = {manual},
    year = {2020},
    note = {R package version 1.5.0},
    url = {https://cran.r-project.org/package=boostmtree},
    pdf =
      {https://cran.r-project.org/web/packages/boostmtree/boostmtree.pdf},
  }