To cite trackeR in publications use:

Frick H and Kosmidis I (2017). “trackeR: Infrastructure for Running and Cycling Data from GPS-Enabled Tracking Devices in R.” Journal of Statistical Software, 82(7), pp. 1–29. doi: 10.18637/jss.v082.i07.

Corresponding BibTeX entry:

  @Article{,
    title = {{trackeR}: Infrastructure for Running and Cycling Data
      from GPS-Enabled Tracking Devices in {R}},
    author = {Hannah Frick and Ioannis Kosmidis},
    journal = {Journal of Statistical Software},
    year = {2017},
    volume = {82},
    number = {7},
    pages = {1--29},
    doi = {10.18637/jss.v082.i07},
  }