To cite actel in publications, please use:

  Flávio, H. and Baktoft, H. (2021) actel: Standardised analysis of
  acoustic telemetry data from animals moving through receiver arrays.
  Methods in Ecology and evolution, 12, 196-203. doi:
  10.1111/2041-210X.13503

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{actel}: Standardised analysis of acoustic telemetry data from animals moving through receiver arrays},
    author = {Hugo Fl\'{a}vio and Henrik Baktoft},
    journal = {Methods in Ecology and Evolution},
    year = {2021},
    volume = {12},
    number = {1},
    pages = {196-203},
    url = {https://doi.org/10.1111/2041-210X.13503},
    doi = {10.1111/2041-210X.13503},
  }