To cite gMWT in publications use:

Fischer D, Oja H (2015). “Mann-Whitney Type Tests for Microarray Experiments: The R Package gMWT.” Journal of Statistical Software, 65(9), 1–19. doi:10.18637/jss.v065.i09, https://www.jstatsoft.org/article/view/v065i09.

Corresponding BibTeX entry:

  @Article{,
    title = {Mann-Whitney Type Tests for Microarray Experiments: The
      {R} Package {gMWT}},
    author = {Daniel Fischer and Hannu Oja},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {65},
    number = {9},
    pages = {1--19},
    doi = {10.18637/jss.v065.i09},
    url = {https://www.jstatsoft.org/article/view/v065i09},
  }