@article{JMLR:v9:henrich08a,
  author  = {Falk-Florian Henrich and Klaus Obermayer},
  title   = {Active Learning by Spherical Subdivision},
  journal = {Journal of Machine Learning Research},
  year    = {2008},
  volume  = {9},
  number  = {5},
  pages   = {105--130},
  url     = {http://jmlr.org/papers/v9/henrich08a.html}
}