To cite mritc in publications use:

Feng D, Tierney L (2011). “mritc: A Package for MRI Tissue Classification.” Journal of Statistical Software, 44(7), 1–20. https://www.jstatsoft.org/v44/i07/.

Corresponding BibTeX entry:

  @Article{,
    title = {{mritc}: A Package for {MRI} Tissue Classification},
    author = {Dai Feng and Luke Tierney},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {44},
    number = {7},
    pages = {1--20},
    url = {https://www.jstatsoft.org/v44/i07/},
  }