@article{thesparseprincipalcomponentofaconstant,
  title = {The Sparse Principal Component of a Constant-rank Matrix},
  author = {Megasthenis Asteris and Dimitris S. Papailiopoulos and George N. Karystinos},
  year = {2013},
  eprint = {1312.5891},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1312.5891v1},
}