Dynamic cell structures for the evaluation of keypoints in facial images
@Article{herpers97ijns,
  author = 	 {R. Herpers and L. Witta and J. Bruske and G. Sommer},
  title = 	 {Dynamic cell structures for the evaluation of keypoints in facial images},
  journal = 	 {Int. J. Neural Systems, Vol. 8, No. 1},
  year = 	 1997,
  volume =       {8},
  pages =        {27--39}
}