To cite flowGraph in publications use:

  Yue, A., Chauve, C., Libbrecht, M., & Brinkman, R. (2019).
  Identifying differential cell populations in flow cytometry data
  accounting for marker frequency. BioRxiv, 837765.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Identifying differential cell populations in flow cytometry data accounting for marker frequency},
    author = {Alice Yue and Cedric Chauve and Maxwell Libbrecht and Ryan Brinkman},
    journal = {BioRxiv},
    year = {2019},
    pages = {837765},
    publisher = {Cold Spring Harbor Laboratory},
  }