@INPROCEEDINGS{KinKamLen:2009,
  author = {T. Kinnunen and J.-K. Kamarainen and L. Lensu and H. K{\"a}lvi{\"a}inen},
  title = {Bag-of-Features Codebook Generation by Self-Organisation},
  booktitle = {7th Int. Workshop on Self-Organizing Maps (WSOM2009)},
  year = {2009},
  address = {St. Augustine, FL, USA}
}