To cite package ‘SpNMF’ in publications use:

Cai Y, Gu H, Kenney T (2018). SpNMF: Supervised NMF. R package version 0.1.1, https://CRAN.R-project.org/package=SpNMF.

Corresponding BibTeX entry:

  @Manual{,
    title = {SpNMF: Supervised NMF},
    author = {Yun Cai and Hong Gu and Toby Kenney},
    year = {2018},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=SpNMF},
  }