@article{zhang_kwok_2010, 
  title={Clustered Nyström Method for Large Scale Manifold Learning and Dimension Reduction}, 
  volume={21}, 
  DOI={10.1109/tnn.2010.2064786}, 
  number={10}, 
  publisher={Institute of Electrical and Electronics Engineers (IEEE)}, 
  author={Zhang and Kwok}, 
  year={2010}
  }