@article{spsdmatrixapproximationviscolumn,
  title = {SPSD Matrix Approximation vis Column Selection: Theories, Algorithms, and Extensions},
  author = {Shusen Wang and Luo Luo and Zhihua Zhang},
  year = {2014},
  eprint = {1406.5675},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1406.5675v6},
}