To cite the SOFIA package in publications use:

Diaz-Garcia L., Covarrubias-Pazaran G., Schlautman B., Zalapa J. 2016. SOFIA: an R package for enhancing genetic visualization with Circos. TBA 1:1-10.

Corresponding BibTeX entry:

  @Article{,
    title = {SOFIA: an R package for enhancing genetic visualization
      with Circos},
    author = {Diaz-Garcia L. and Covarrubias-Pazaran G. and Schlautman
      B. and Zalapa J.},
    journal = {Journal of Heredity},
    year = {2017},
    volume = {1},
  }