To cite tbm in publications use:

  Hothorn T (2019). “Transformation Boosting Machines.” _Statistics and
  Computing_. doi:10.1007/s11222-019-09870-4
  <https://doi.org/10.1007/s11222-019-09870-4>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Transformation Boosting Machines},
    author = {Torsten Hothorn},
    journal = {Statistics and Computing},
    year = {2019},
    doi = {10.1007/s11222-019-09870-4},
  }