@inproceedings{rousu_saunders_szedmak_shawe-taylor_2005, 
  title={Learning hierarchical multi-category text classification models}, 
  DOI={10.1145/1102351.1102445}, 
  publisher={ACM Press}, 
  author={Rousu and Saunders and Szedmak and Shawe-Taylor}, 
  year={2005}
  }