To cite tram in publications use either of these two references.

For theoretical issues cite:

Torsten Hothorn, Lisa Moest, Peter Buehlmann (2018). Most Likely Transformations. Scandinavian Journal of Statistics, 45(1), 110--134.

For software implementation issues cite:

Torsten Hothorn (2018). Most Likely Transformations: The mlt Package. Journal of Statistical Software, forthcoming.

Corresponding BibTeX entries:

    title = {Most Likely Transformations},
    author = {Torsten Hothorn and Lisa Möst and Peter Bühlmann},
    journal = {Scandinavian Journal of Statistics},
    year = {2018},
    volume = {45},
    number = {1},
    pages = {110--134},
    title = {Most Likely Transformations: The mlt Package},
    author = {Torsten Hothorn},
    journal = {Journal of Statistical Software},
    year = {2018},