@inproceedings{optimization,
  title = {Quasi-Newton Methods: A New Direction},
  author = {Hennig, Philipp and Kiefel, Martin},
  booktitle = {Proceedings of the 29th International Conference on Machine Learning},
  pages = {25--32},
  series = {ICML '12},
  editors = {John Langford and Joelle Pineau},
  publisher = {Omnipress},
  address = {New York, NY, USA},
  month = jul,
  year = {2012},
  url = {http://www.is.tuebingen.mpg.de/fileadmin/user_upload/files/publications/2012/Hennig_Kiefel_ICML2012.pdf},
  month_numeric = {7}
}