To cite mixsmsn in publications use:

Prates MO, Cabral CRB, Lachos VH (2013). “mixsmsn: Fitting Finite Mixture of Scale Mixture of Skew-Normal Distributions.” Journal of Statistical Software, 54(12), 1–20. https://www.jstatsoft.org/v54/i12/.

Corresponding BibTeX entry:

  @Article{,
    title = {{mixsmsn}: Fitting Finite Mixture of Scale Mixture of
      Skew-Normal Distributions},
    author = {Marcos Oliveira Prates and Celso R{\^o}mulo Barbosa
      Cabral and V{\'i}ctor Hugo Lachos},
    journal = {Journal of Statistical Software},
    year = {2013},
    volume = {54},
    number = {12},
    pages = {1--20},
    url = {https://www.jstatsoft.org/v54/i12/},
  }