@article{bo_tnn07a,
  author = {L. Jiao and L. Bo and L. Wang},
  title = {Fast Sparse Approximation for Least Square Support Vector Machine},
  journal = {IEEE Transactions on Neural Networks},
  year = {2007},
  optkey = {},
  volume = {18},
  optnumber = {},
  pages = {685--697},
  optmonth = {},
  optnote = {},
  optannote = {},
  pdf = {http://ttic.uchicago.edu/~blf0218/paper/tnn07a.pdf}