@INPROCEEDINGS{Hellbach-ICANN-2009,
  author = {Hellbach, Sven and Eggert, Julian and Koerner, Edgar and Gross, Horst-Michael},
  title = {Basis Decomposition of Motion Trajectories using Spatio-Temporal
    {NMF}},
  booktitle = {Int. Conf. on Artificial Neural Networks (ICANN)},
  year = {2009},
  pages = {804--814},
  volume = {5769},
  number = {2},
  series = {LNCS},
  publisher = {Springer}
}