@article{scalablespectralalgorithmsforcommunity,
  title = {Scalable Spectral Algorithms for Community Detection in Directed Networks},
  author = {Sungmin Kim and Tao Shi},
  year = {2012},
  eprint = {1211.6807},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1211.6807v2},
}