@article{JMLR:v13:zitnik12a,
  author  = {Marinka {\v{Z}}itnik and Bla{\v{z}} Zupan},
  title   = {NIMFA : A Python Library for Nonnegative Matrix Factorization},
  journal = {Journal of Machine Learning Research},
  year    = {2012},
  volume  = {13},
  number  = {30},
  pages   = {849--853},
  url     = {http://jmlr.org/papers/v13/zitnik12a.html}
}