To cite package ‘symphony’ in publications use:

  Kang J, Korsunsky I, Raychaudhuri S (2023). _symphony: Efficient and
  Precise Single-Cell Reference Atlas Mapping_. R package version
  0.1.1, <https://CRAN.R-project.org/package=symphony>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {symphony: Efficient and Precise Single-Cell Reference Atlas Mapping},
    author = {Joyce Kang and Ilya Korsunsky and Soumya Raychaudhuri},
    year = {2023},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=symphony},
  }