To cite package ‘tcplfit2’ in publications use:

  Sheffield T (2024). _tcplfit2: A Concentration-Response Modeling
  Utility_. R package version 0.1.7,
  <https://github.com/usepa/comptox-toxcast-tcplfit2>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tcplfit2: A Concentration-Response Modeling Utility},
    author = {Thomas Sheffield},
    year = {2024},
    note = {R package version 0.1.7},
    url = {https://github.com/usepa/comptox-toxcast-tcplfit2},
  }