@Article{CWH01a,
  author =   {Chih-Wei Hsu and Chih-Jen Lin},
  title =    {A Comparison of Methods
for Multi-class Support Vector Machines},
  journal={IEEE Transactions on  Neural Networks},
  volume={13},
  number={2},
  pages={415--425},
  year =     {2002}
}


@Article{CWH01b,
  author =   {Chih-Wei Hsu and Chih-Jen Lin},
  title =    {A simple decomposition method for
 support vector machines},
  year =     {2002},
  journal = {Machine Learning},
  volume = {46},
  pages = {291--314}
}