To cite fmrs in publications use:

  Farhad Shokoohi et. al. (2019) {fmrs}: Variable Selection in Finite
  Mixture of AFT, Version 0.99.1 URL https://github.com/shokoohi/fmrs

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{fmrs}: Variable Selection in Finite Mixture of AFT
         Regression and FMR, Version 0.99.1},
    author = {Farhad Shokoohi and Abbas Khalili and Masoud Asgharian and Shili Lin},
    year = {2020},
    url = {https://github.com/shokoohi/fmrs},
  }

  Shokoohi, F., Khalili A., Asgharian M, and Lin S. (2019). Capturing
  heterogeneity of covariate effects in hidden subpopulations in the
  presence of censoring and large number of covariates The Annals of
  Applied Statistics 13 1 444-465 doi:10.1214/18-AOAS1198

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Capturing heterogeneity of covariate effects in hidden
	 subpopulations in the presence of censoring and large number of covariates},
    author = {Farhad Shokoohi and Abbas Khalili and Masoud Asgharian and Shili Lin},
    year = {2019},
    journal = {The Annals of Applied Statistics},
    volume = {13},
    number = {1},
    pages = {444--465},
  }